20531751350 has 96 divisors (see below), whose sum is σ = 42396500736. Its totient is φ = 7334870400.

The previous prime is 20531751347. The next prime is 20531751379. The reversal of 20531751350 is 5315713502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24947039 + ... + 24947861.

It is an arithmetic number, because the mean of its divisors is an integer number (441630216).

Almost surely, 2^20531751350 is an apocalyptic number.

20531751350 is an abundant number, since it is smaller than the sum of its proper divisors (21864749386).

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

20531751350 is a wasteful number, since it uses less digits than its factorization.

20531751350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The spelling of 20531751350 in words is "twenty billion, five hundred thirty-one million, seven hundred fifty-one thousand, three hundred fifty".