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108827788421 = 1117581966783
BaseRepresentation
bin110010101011010100…
…1000100010010000101
3101101220101200110101102
41211112221010102011
53240334403212141
6121554513105445
710601565636662
oct1452651042205
9341811613342
10108827788421
11421764a4210
1219112258285
13a3546b4ba1
1453a5648a69
152c6e24a99b
hex1956a44485

108827788421 has 8 divisors (see below), whose sum is σ = 125704825344. Its totient is φ = 93114685120.

The previous prime is 108827788273. The next prime is 108827788493. The reversal of 108827788421 is 124887728801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-108827788421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108827788021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290983205 + ... + 290983578.

It is an arithmetic number, because the mean of its divisors is an integer number (15713103168).

Almost surely, 2108827788421 is an apocalyptic number.

108827788421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108827788421 is a deficient number, since it is larger than the sum of its proper divisors (16877036923).

108827788421 is a wasteful number, since it uses less digits than its factorization.

108827788421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581966811.

The product of its (nonzero) digits is 3211264, while the sum is 56.

The spelling of 108827788421 in words is "one hundred eight billion, eight hundred twenty-seven million, seven hundred eighty-eight thousand, four hundred twenty-one".

Divisors: 1 11 17 187 581966783 6401634613 9893435311 108827788421