20402555113110 has 16 divisors (see below), whose sum is σ = 48966132271536. Its totient is φ = 5440681363488.

The previous prime is 20402555113043. The next prime is 20402555113111. The reversal of 20402555113110 is 1131155520402.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 680085170437 = 20402555113110 / (2 + 0 + 4 + 0 + 2 + 5 + 5 + 5 + 1 + 1 + 3 + 1 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402555113111) 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, 340042585189 + ... + 340042585248.

It is an arithmetic number, because the mean of its divisors is an integer number (3060383266971).

Almost surely, 2^{20402555113110} is an apocalyptic number.

20402555113110 is an abundant number, since it is smaller than the sum of its proper divisors (28563577158426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20402555113110 is a wasteful number, since it uses less digits than its factorization.

20402555113110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680085170447.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 20402555113110 in words is "twenty trillion, four hundred two billion, five hundred fifty-five million, one hundred thirteen thousand, one hundred ten".