20084172788 has 12 divisors (see below), whose sum is σ = 35280944160. Its totient is φ = 10003903032.

The previous prime is 20084172733. The next prime is 20084172799. The reversal of 20084172788 is 88727148002.

It is a hoax number, since the sum of its digits (47) 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 3 ways as a sum of consecutive naturals, for example, 9544658 + ... + 9546761.

It is an arithmetic number, because the mean of its divisors is an integer number (2940078680).

Almost surely, 2^20084172788 is an apocalyptic number.

It is an amenable number.

20084172788 is a deficient number, since it is larger than the sum of its proper divisors (15196771372).

20084172788 is a wasteful number, since it uses less digits than its factorization.

20084172788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19091686 (or 19091684 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 47.

The spelling of 20084172788 in words is "twenty billion, eighty-four million, one hundred seventy-two thousand, seven hundred eighty-eight".