20146751531172 has 48 divisors (see below), whose sum is σ = 59694078613120. Its totient is φ = 5756214722976.

The previous prime is 20146751531119. The next prime is 20146751531281. The reversal of 20146751531172 is 27113515764102.

20146751531172 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 67 + 51 + 531 + 1 + 7 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13324570363 + ... + 13324571874.

Almost surely, 2^{20146751531172} is an apocalyptic number.

It is an amenable number.

20146751531172 is an abundant number, since it is smaller than the sum of its proper divisors (39547327081948).

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

20146751531172 is a wasteful number, since it uses less digits than its factorization.

20146751531172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26649142257 (or 26649142249 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 20146751531172 in words is "twenty trillion, one hundred forty-six billion, seven hundred fifty-one million, five hundred thirty-one thousand, one hundred seventy-two".