55666017724 has 48 divisors (see below), whose sum is σ = 99618361920. Its totient is φ = 27211161600.

The previous prime is 55666017707. The next prime is 55666017731. The reversal of 55666017724 is 42771066655.

It is a congruent number.

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, 26145492 + ... + 26147620.

It is an arithmetic number, because the mean of its divisors is an integer number (2075382540).

Almost surely, 2^55666017724 is an apocalyptic number.

It is an amenable number.

55666017724 is a deficient number, since it is larger than the sum of its proper divisors (43952344196).

55666017724 is a wasteful number, since it uses less digits than its factorization.

55666017724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950 (or 2948 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 55666017724 in words is "fifty-five billion, six hundred sixty-six million, seventeen thousand, seven hundred twenty-four".