55810914642 has 216 divisors, whose sum is σ = 147990160656. Its totient is φ = 15152816448.

The previous prime is 55810914637. The next prime is 55810914683. The reversal of 55810914642 is 24641901855.

55810914642 is a `hidden beast` number, since 5 + 581 + 0 + 9 + 1 + 4 + 64 + 2 = 666.

It is a super-2 number, since 2×55810914642² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 49697493 + ... + 49698615.

Almost surely, 2^55810914642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55810914642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73995080328).

55810914642 is an abundant number, since it is smaller than the sum of its proper divisors (92179246014).

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

55810914642 is a wasteful number, since it uses less digits than its factorization.

55810914642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 55810914642 in words is "fifty-five billion, eight hundred ten million, nine hundred fourteen thousand, six hundred forty-two".