20088191994 has 16 divisors (see below), whose sum is σ = 43266875232. Its totient is φ = 6180982128.

The previous prime is 20088191923. The next prime is 20088191999. The reversal of 20088191994 is 49919188002.

20088191994 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (20088191999) 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, 128770384 + ... + 128770539.

It is an arithmetic number, because the mean of its divisors is an integer number (2704179702).

Almost surely, 2^20088191994 is an apocalyptic number.

20088191994 is an abundant number, since it is smaller than the sum of its proper divisors (23178683238).

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

20088191994 is a wasteful number, since it uses less digits than its factorization.

20088191994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257540941.

The product of its (nonzero) digits is 373248, while the sum is 51.

The spelling of 20088191994 in words is "twenty billion, eighty-eight million, one hundred ninety-one thousand, nine hundred ninety-four".