55054987896681 has 20 divisors (see below), whose sum is σ = 82242960819712. Its totient is φ = 36703180411128.

The previous prime is 55054987896641. The next prime is 55054987896737. The reversal of 55054987896681 is 18669878945055.

55054987896681 is a `hidden beast` number, since 5 + 5 + 0 + 549 + 8 + 7 + 8 + 9 + 6 + 68 + 1 = 666.

It is not a de Polignac number, because 55054987896681 - 2¹³ = 55054987888489 is a prime.

It is a super-2 number, since 2×55054987896681² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55054987896681.

It is not an unprimeable number, because it can be changed into a prime (55054987896631) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21747960 + ... + 24147126.

Almost surely, 2^{55054987896681} is an apocalyptic number.

It is an amenable number.

55054987896681 is a deficient number, since it is larger than the sum of its proper divisors (27187972923031).

55054987896681 is a wasteful number, since it uses less digits than its factorization.

55054987896681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682482 (or 2682473 counting only the distinct ones).

The product of its (nonzero) digits is 5225472000, while the sum is 81.

The spelling of 55054987896681 in words is "fifty-five trillion, fifty-four billion, nine hundred eighty-seven million, eight hundred ninety-six thousand, six hundred eighty-one".