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26661114260 = 22511196378257
BaseRepresentation
bin11000110101001000…
…000101000110010100
32112211001120221012022
4120311020011012110
5414100221124020
620125320112312
71632454506044
oct306510050624
975731527168
1026661114260
111034155a830
125200905698
13268b719471
14140cc29724
15a60944625
hex635205194

26661114260 has 48 divisors (see below), whose sum is σ = 64292840640. Its totient is φ = 9184688640.

The previous prime is 26661114247. The next prime is 26661114283. The reversal of 26661114260 is 6241116662.

It is a self number, because there is not a number n which added to its sum of digits gives 26661114260.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3184949 + ... + 3193308.

It is an arithmetic number, because the mean of its divisors is an integer number (1339434180).

Almost surely, 226661114260 is an apocalyptic number.

26661114260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26661114260 is an abundant number, since it is smaller than the sum of its proper divisors (37631726380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26661114260 is a wasteful number, since it uses less digits than its factorization.

26661114260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378296 (or 6378294 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 26661114260 in words is "twenty-six billion, six hundred sixty-one million, one hundred fourteen thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 19 20 22 38 44 55 76 95 110 190 209 220 380 418 836 1045 2090 4180 6378257 12756514 25513028 31891285 63782570 70160827 121186883 127565140 140321654 242373766 280643308 350804135 484747532 605934415 701608270 1211868830 1333055713 1403216540 2423737660 2666111426 5332222852 6665278565 13330557130 26661114260