55817232612 has 12 divisors (see below), whose sum is σ = 130240209456. Its totient is φ = 18605744200.

The previous prime is 55817232589. The next prime is 55817232619. The reversal of 55817232612 is 21623271855.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55817232619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325718014 + ... + 2325718037.

It is an arithmetic number, because the mean of its divisors is an integer number (10853350788).

Almost surely, 2^55817232612 is an apocalyptic number.

It is an amenable number.

55817232612 is an abundant number, since it is smaller than the sum of its proper divisors (74422976844).

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

55817232612 is a wasteful number, since it uses less digits than its factorization.

55817232612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651436058 (or 4651436056 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The spelling of 55817232612 in words is "fifty-five billion, eight hundred seventeen million, two hundred thirty-two thousand, six hundred twelve".