20708641375 has 32 divisors (see below), whose sum is σ = 27432699840. Its totient is φ = 15553612800.

The previous prime is 20708641363. The next prime is 20708641381. The reversal of 20708641375 is 57314680702.

It is not a de Polignac number, because 20708641375 - 2²⁷ = 20574423647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857212 + ... + 881038.

It is an arithmetic number, because the mean of its divisors is an integer number (857271870).

Almost surely, 2^20708641375 is an apocalyptic number.

20708641375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20708641375 is a deficient number, since it is larger than the sum of its proper divisors (6724058465).

20708641375 is a wasteful number, since it uses less digits than its factorization.

20708641375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24268 (or 24258 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 20708641375 in words is "twenty billion, seven hundred eight million, six hundred forty-one thousand, three hundred seventy-five".