56555211042440 has 64 divisors (see below), whose sum is σ = 138819983440320. Its totient is φ = 20565139104000.

The previous prime is 56555211042427. The next prime is 56555211042481. The reversal of 56555211042440 is 4424011255565.

It is a super-2 number, since 2×56555211042440² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 56555211042391 and 56555211042400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22390070 + ... + 24787610.

It is an arithmetic number, because the mean of its divisors is an integer number (2169062241255).

Almost surely, 2^{56555211042440} is an apocalyptic number.

It is an amenable number.

56555211042440 is an abundant number, since it is smaller than the sum of its proper divisors (82264772397880).

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

56555211042440 is a wasteful number, since it uses less digits than its factorization.

56555211042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451174 (or 2451170 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 44.

The spelling of 56555211042440 in words is "fifty-six trillion, five hundred fifty-five billion, two hundred eleven million, forty-two thousand, four hundred forty".