20110188747285 has 128 divisors (see below), whose sum is σ = 44658525327360. Its totient is φ = 8359399749888.

The previous prime is 20110188747277. The next prime is 20110188747367. The reversal of 20110188747285 is 58274788101102.

20110188747285 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 0 + 18 + 87 + 472 + 85 = 666.

It is not a de Polignac number, because 20110188747285 - 2³ = 20110188747277 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11393107 + ... + 13039296.

It is an arithmetic number, because the mean of its divisors is an integer number (348894729120).

Almost surely, 2^{20110188747285} is an apocalyptic number.

It is an amenable number.

20110188747285 is an abundant number, since it is smaller than the sum of its proper divisors (24548336580075).

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

20110188747285 is a wasteful number, since it uses less digits than its factorization.

20110188747285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24432504 (or 24432498 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The spelling of 20110188747285 in words is "twenty trillion, one hundred ten billion, one hundred eighty-eight million, seven hundred forty-seven thousand, two hundred eighty-five".