13551678056 has 16 divisors (see below), whose sum is σ = 29039310240. Its totient is φ = 5807862000.

The previous prime is 13551678043. The next prime is 13551678071. The reversal of 13551678056 is 65087615531.

It is a self number, because there is not a number n which added to its sum of digits gives 13551678056.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120997070 + ... + 120997181.

It is an arithmetic number, because the mean of its divisors is an integer number (1814956890).

Almost surely, 2^13551678056 is an apocalyptic number.

It is an amenable number.

13551678056 is an abundant number, since it is smaller than the sum of its proper divisors (15487632184).

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

13551678056 is a wasteful number, since it uses less digits than its factorization.

13551678056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241994264 (or 241994260 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 13551678056 in words is "thirteen billion, five hundred fifty-one million, six hundred seventy-eight thousand, fifty-six".