20321066256524 has 48 divisors (see below), whose sum is σ = 39323569896576. Its totient is φ = 9111716678400.

The previous prime is 20321066256511. The next prime is 20321066256529. The reversal of 20321066256524 is 42565266012302.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (20321066256529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8635982 + ... + 10734165.

It is an arithmetic number, because the mean of its divisors is an integer number (819241039512).

Almost surely, 2^{20321066256524} is an apocalyptic number.

It is an amenable number.

20321066256524 is a deficient number, since it is larger than the sum of its proper divisors (19002503640052).

20321066256524 is a wasteful number, since it uses less digits than its factorization.

20321066256524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19370486 (or 19370484 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 20321066256524 in words is "twenty trillion, three hundred twenty-one billion, sixty-six million, two hundred fifty-six thousand, five hundred twenty-four".