55317009792 has 128 divisors (see below), whose sum is σ = 168730358400. Its totient is φ = 15880458240.

The previous prime is 55317009779. The next prime is 55317009817. The reversal of 55317009792 is 29790071355.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 264373 + ... + 424884.

It is an arithmetic number, because the mean of its divisors is an integer number (1318205925).

Almost surely, 2^55317009792 is an apocalyptic number.

It is an amenable number.

55317009792 is an abundant number, since it is smaller than the sum of its proper divisors (113413348608).

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

55317009792 is a wasteful number, since it uses less digits than its factorization.

55317009792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689304 (or 689292 counting only the distinct ones).

The product of its (nonzero) digits is 595350, while the sum is 48.

The spelling of 55317009792 in words is "fifty-five billion, three hundred seventeen million, nine thousand, seven hundred ninety-two".