55969765440 has 112 divisors (see below), whose sum is σ = 179365119552. Its totient is φ = 14785755136.

The previous prime is 55969765421. The next prime is 55969765447. The reversal of 55969765440 is 4456796955.

It is a super-2 number, since 2×55969765440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (55969765447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169719 + ... + 375158.

Almost surely, 2^55969765440 is an apocalyptic number.

It is an amenable number.

55969765440 is an abundant number, since it is smaller than the sum of its proper divisors (123395354112).

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

55969765440 is a wasteful number, since it uses less digits than its factorization.

55969765440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545004 (or 544994 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 60.

The spelling of 55969765440 in words is "fifty-five billion, nine hundred sixty-nine million, seven hundred sixty-five thousand, four hundred forty".