20475245637524 has 24 divisors (see below), whose sum is σ = 37940296141440. Its totient is φ = 9635188657536.

The previous prime is 20475245637463. The next prime is 20475245637559. The reversal of 20475245637524 is 42573654257402.

It is a self number, because there is not a number n which added to its sum of digits gives 20475245637524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449084 + ... + 6414995.

It is an arithmetic number, because the mean of its divisors is an integer number (1580845672560).

Almost surely, 2^{20475245637524} is an apocalyptic number.

It is an amenable number.

20475245637524 is a deficient number, since it is larger than the sum of its proper divisors (17465050503916).

20475245637524 is a wasteful number, since it uses less digits than its factorization.

20475245637524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6907967 (or 6907965 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 56.

The spelling of 20475245637524 in words is "twenty trillion, four hundred seventy-five billion, two hundred forty-five million, six hundred thirty-seven thousand, five hundred twenty-four".