20713897004 has 6 divisors (see below), whose sum is σ = 36249319764. Its totient is φ = 10356948500.

The previous prime is 20713896971. The next prime is 20713897021. The reversal of 20713897004 is 40079831702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589237122 + ... + 2589237129.

It is an arithmetic number, because the mean of its divisors is an integer number (6041553294).

Almost surely, 2^20713897004 is an apocalyptic number.

It is an amenable number.

20713897004 is a deficient number, since it is larger than the sum of its proper divisors (15535422760).

20713897004 is a wasteful number, since it uses less digits than its factorization.

20713897004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178474255 (or 5178474253 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 20713897004 in words is "twenty billion, seven hundred thirteen million, eight hundred ninety-seven thousand, four".