20115685088 has 48 divisors (see below), whose sum is σ = 39976675200. Its totient is φ = 9963158400.

The previous prime is 20115685087. The next prime is 20115685127. The reversal of 20115685088 is 88058651102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115685087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507003 + ... + 2515013.

It is an arithmetic number, because the mean of its divisors is an integer number (832847400).

Almost surely, 2^20115685088 is an apocalyptic number.

It is an amenable number.

20115685088 is a deficient number, since it is larger than the sum of its proper divisors (19860990112).

20115685088 is a wasteful number, since it uses less digits than its factorization.

20115685088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8751 (or 8743 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 44.

The spelling of 20115685088 in words is "twenty billion, one hundred fifteen million, six hundred eighty-five thousand, eighty-eight".