20688912710 has 16 divisors (see below), whose sum is σ = 37248900192. Its totient is φ = 8273596800.

The previous prime is 20688912703. The next prime is 20688912757. The reversal of 20688912710 is 1721988602.

It is a super-2 number, since 2×20688912710² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201506 + ... + 286325.

It is an arithmetic number, because the mean of its divisors is an integer number (2328056262).

Almost surely, 2^20688912710 is an apocalyptic number.

20688912710 is a deficient number, since it is larger than the sum of its proper divisors (16559987482).

20688912710 is a wasteful number, since it uses less digits than its factorization.

20688912710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492079.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 20688912710 in words is "twenty billion, six hundred eighty-eight million, nine hundred twelve thousand, seven hundred ten".