20313455502 has 32 divisors (see below), whose sum is σ = 40787292672. Its totient is φ = 6744475584.

The previous prime is 20313455443. The next prime is 20313455521. The reversal of 20313455502 is 20555431302.

It is a self number, because there is not a number n which added to its sum of digits gives 20313455502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1624458 + ... + 1636914.

It is an arithmetic number, because the mean of its divisors is an integer number (1274602896).

Almost surely, 2^20313455502 is an apocalyptic number.

20313455502 is an abundant number, since it is smaller than the sum of its proper divisors (20473837170).

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

20313455502 is a wasteful number, since it uses less digits than its factorization.

20313455502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13512.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 20313455502 its reverse (20555431302), we get a palindrome (40868886804).

The spelling of 20313455502 in words is "twenty billion, three hundred thirteen million, four hundred fifty-five thousand, five hundred two".