20165129372472 has 64 divisors (see below), whose sum is σ = 58559157926400. Its totient is φ = 5667015277440.

The previous prime is 20165129372447. The next prime is 20165129372477. The reversal of 20165129372472 is 27427392156102.

It is a super-2 number, since 2×20165129372472² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165129372477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983846572 + ... + 983867067.

It is an arithmetic number, because the mean of its divisors is an integer number (914986842600).

Almost surely, 2^{20165129372472} is an apocalyptic number.

It is an amenable number.

20165129372472 is an abundant number, since it is smaller than the sum of its proper divisors (38394028553928).

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

20165129372472 is a wasteful number, since it uses less digits than its factorization.

20165129372472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967713716 (or 1967713712 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 20165129372472 in words is "twenty trillion, one hundred sixty-five billion, one hundred twenty-nine million, three hundred seventy-two thousand, four hundred seventy-two".