20502753456 has 40 divisors (see below), whose sum is σ = 52970609664. Its totient is φ = 6833584960.

The previous prime is 20502753451. The next prime is 20502753463. The reversal of 20502753456 is 65435720502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20502753451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867265 + ... + 890591.

Almost surely, 2^20502753456 is an apocalyptic number.

It is an amenable number.

20502753456 is an abundant number, since it is smaller than the sum of its proper divisors (32467856208).

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

20502753456 is a wasteful number, since it uses less digits than its factorization.

20502753456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41649 (or 41643 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 39.

The spelling of 20502753456 in words is "twenty billion, five hundred two million, seven hundred fifty-three thousand, four hundred fifty-six".