55045136688 has 40 divisors (see below), whose sum is σ = 142208421888. Its totient is φ = 18347284032.

The previous prime is 55045136681. The next prime is 55045136711. The reversal of 55045136688 is 88663154055.

It is a happy number.

It is a Cunningham number, because it is equal to 234617²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 55045136688.

It is not an unprimeable number, because it can be changed into a prime (55045136681) 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, 1388145 + ... + 1427247.

Almost surely, 2^55045136688 is an apocalyptic number.

It is an amenable number.

55045136688 is an abundant number, since it is smaller than the sum of its proper divisors (87163285200).

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

55045136688 is a wasteful number, since it uses less digits than its factorization.

55045136688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68441 (or 68435 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 55045136688 in words is "fifty-five billion, forty-five million, one hundred thirty-six thousand, six hundred eighty-eight".