13078512855 has 32 divisors (see below), whose sum is σ = 23255865600. Its totient is φ = 6973654176.

The previous prime is 13078512847. The next prime is 13078512893. The reversal of 13078512855 is 55821587031.

13078512855 is a `hidden beast` number, since 13 + 0 + 78 + 512 + 8 + 55 = 666.

It is not a de Polignac number, because 13078512855 - 2³ = 13078512847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13078512855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853572 + ... + 868758.

It is an arithmetic number, because the mean of its divisors is an integer number (726745800).

Almost surely, 2^13078512855 is an apocalyptic number.

13078512855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13078512855 is a deficient number, since it is larger than the sum of its proper divisors (10177352745).

13078512855 is a wasteful number, since it uses less digits than its factorization.

13078512855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21580 (or 21574 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 45.

The spelling of 13078512855 in words is "thirteen billion, seventy-eight million, five hundred twelve thousand, eight hundred fifty-five".