20860687118 has 16 divisors (see below), whose sum is σ = 31507646976. Its totient is φ = 10358373120.

The previous prime is 20860687109. The next prime is 20860687123. The reversal of 20860687118 is 81178606802.

It is a happy number.

It is a super-2 number, since 2×20860687118² (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, 120038 + ... + 236918.

It is an arithmetic number, because the mean of its divisors is an integer number (1969227936).

Almost surely, 2^20860687118 is an apocalyptic number.

20860687118 is a deficient number, since it is larger than the sum of its proper divisors (10646959858).

20860687118 is a wasteful number, since it uses less digits than its factorization.

20860687118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117499.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 20860687118 in words is "twenty billion, eight hundred sixty million, six hundred eighty-seven thousand, one hundred eighteen".