56671712154992 has 80 divisors (see below), whose sum is σ = 126107940182400. Its totient is φ = 24400184728320.

The previous prime is 56671712154979. The next prime is 56671712155111. The reversal of 56671712154992 is 29945121717665.

It is a happy number.

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, 19611863 + ... + 22315209.

It is an arithmetic number, because the mean of its divisors is an integer number (1576349252280).

Almost surely, 2^{56671712154992} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56671712154992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63053970091200).

56671712154992 is an abundant number, since it is smaller than the sum of its proper divisors (69436228027408).

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

56671712154992 is a wasteful number, since it uses less digits than its factorization.

56671712154992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709654 (or 2709648 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 65.

The spelling of 56671712154992 in words is "fifty-six trillion, six hundred seventy-one billion, seven hundred twelve million, one hundred fifty-four thousand, nine hundred ninety-two".