20136474232672 has 72 divisors (see below), whose sum is σ = 46392266836944. Its totient is φ = 8578241263872.

The previous prime is 20136474232669. The next prime is 20136474232703. The reversal of 20136474232672 is 27623247463102.

It is a super-2 number, since 2×20136474232672² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38187663 + ... + 38711374.

It is an arithmetic number, because the mean of its divisors is an integer number (644337039402).

Almost surely, 2^{20136474232672} is an apocalyptic number.

It is an amenable number.

20136474232672 is an abundant number, since it is smaller than the sum of its proper divisors (26255792604272).

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

20136474232672 is a wasteful number, since it uses less digits than its factorization.

20136474232672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76899228 (or 76899213 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 20136474232672 in words is "twenty trillion, one hundred thirty-six billion, four hundred seventy-four million, two hundred thirty-two thousand, six hundred seventy-two".