20315255733 has 8 divisors (see below), whose sum is σ = 30096675200. Its totient is φ = 13543503804.

The previous prime is 20315255693. The next prime is 20315255743. The reversal of 20315255733 is 33755251302.

20315255733 is a `hidden beast` number, since 2 + 0 + 31 + 52 + 5 + 573 + 3 = 666.

It is not a de Polignac number, because 20315255733 - 2³⁰ = 19241513909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315255743) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 376208413 + ... + 376208466.

It is an arithmetic number, because the mean of its divisors is an integer number (3762084400).

Almost surely, 2^20315255733 is an apocalyptic number.

It is an amenable number.

20315255733 is a deficient number, since it is larger than the sum of its proper divisors (9781419467).

20315255733 is an equidigital number, since it uses as much as digits as its factorization.

20315255733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752416888 (or 752416882 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 36.

The spelling of 20315255733 in words is "twenty billion, three hundred fifteen million, two hundred fifty-five thousand, seven hundred thirty-three".