56521702331020 has 96 divisors (see below), whose sum is σ = 124878199799808. Its totient is φ = 21447386940672.

The previous prime is 56521702331011. The next prime is 56521702331033. The reversal of 56521702331020 is 2013320712565.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157145427 + ... + 157504693.

It is an arithmetic number, because the mean of its divisors is an integer number (1300814581248).

Almost surely, 2^{56521702331020} 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 56521702331020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62439099899904).

56521702331020 is an abundant number, since it is smaller than the sum of its proper divisors (68356497468788).

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

56521702331020 is a wasteful number, since it uses less digits than its factorization.

56521702331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362119 (or 362117 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 56521702331020 in words is "fifty-six trillion, five hundred twenty-one billion, seven hundred two million, three hundred thirty-one thousand, twenty".