55516472840 has 32 divisors (see below), whose sum is σ = 124952367960. Its totient is φ = 22199424000.

The previous prime is 55516472831. The next prime is 55516472867. The reversal of 55516472840 is 4827461555.

It can be written as a sum of positive squares in 4 ways, for example, as 33765532516 + 21750940324 = 183754^2 + 147482^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97511 + ... + 347190.

Almost surely, 2^55516472840 is an apocalyptic number.

It is an amenable number.

55516472840 is an abundant number, since it is smaller than the sum of its proper divisors (69435895120).

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

55516472840 is a wasteful number, since it uses less digits than its factorization.

55516472840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447833 (or 447829 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 55516472840 in words is "fifty-five billion, five hundred sixteen million, four hundred seventy-two thousand, eight hundred forty".