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12863275557 = 3111920515591
BaseRepresentation
bin10111111101011011…
…00000001000100101
31020012110112002210020
423332231200020211
5202320444304212
65524224345353
7633523016046
oct137655401045
936173462706
1012863275557
115500a90350
1225aba75259
13129cc70572
148a05388cd
15504445d8c
hex2feb60225

12863275557 has 16 divisors (see below), whose sum is σ = 19694968320. Its totient is φ = 7385612400.

The previous prime is 12863275547. The next prime is 12863275571. The reversal of 12863275557 is 75557236821.

It is a happy number.

12863275557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12863275557 - 24 = 12863275541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12863275517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10257169 + ... + 10258422.

It is an arithmetic number, because the mean of its divisors is an integer number (1230935520).

Almost surely, 212863275557 is an apocalyptic number.

It is an amenable number.

12863275557 is a deficient number, since it is larger than the sum of its proper divisors (6831692763).

12863275557 is a wasteful number, since it uses less digits than its factorization.

12863275557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20515624.

The product of its digits is 3528000, while the sum is 51.

It can be divided in two parts, 12863 and 275557, that added together give a triangular number (288420 = T759).

The spelling of 12863275557 in words is "twelve billion, eight hundred sixty-three million, two hundred seventy-five thousand, five hundred fifty-seven".

Divisors: 1 3 11 19 33 57 209 627 20515591 61546773 225671501 389796229 677014503 1169388687 4287758519 12863275557