20651748524 has 48 divisors (see below), whose sum is σ = 40123036800. Its totient is φ = 9221443200.

The previous prime is 20651748521. The next prime is 20651748541. The reversal of 20651748524 is 42584715602.

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 (20651748521) 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, 6335207 + ... + 6338465.

It is an arithmetic number, because the mean of its divisors is an integer number (835896600).

Almost surely, 2^20651748524 is an apocalyptic number.

It is an amenable number.

20651748524 is a deficient number, since it is larger than the sum of its proper divisors (19471288276).

20651748524 is a wasteful number, since it uses less digits than its factorization.

20651748524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774 (or 5772 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 20651748524 in words is "twenty billion, six hundred fifty-one million, seven hundred forty-eight thousand, five hundred twenty-four".