55515331544 has 16 divisors (see below), whose sum is σ = 104167748520. Its totient is φ = 27737265280.

The previous prime is 55515331499. The next prime is 55515331601. The reversal of 55515331544 is 44513351555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538494 + ... + 2560269.

Almost surely, 2^55515331544 is an apocalyptic number.

It is an amenable number.

55515331544 is a deficient number, since it is larger than the sum of its proper divisors (48652416976).

55515331544 is a wasteful number, since it uses less digits than its factorization.

55515331544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100130 (or 5100126 counting only the distinct ones).

The product of its digits is 450000, while the sum is 41.

The spelling of 55515331544 in words is "fifty-five billion, five hundred fifteen million, three hundred thirty-one thousand, five hundred forty-four".