20117072534624 has 96 divisors (see below), whose sum is σ = 44928351468000. Its totient is φ = 8789968502784.

The previous prime is 20117072534597. The next prime is 20117072534651. The reversal of 20117072534624 is 42643527071102.

It is an interprime number because it is at equal distance from previous prime (20117072534597) and next prime (20117072534651).

It is a congruent number.

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, 10404272 + ... + 12185360.

It is an arithmetic number, because the mean of its divisors is an integer number (468003661125).

Almost surely, 2^{20117072534624} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20117072534624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22464175734000).

20117072534624 is an abundant number, since it is smaller than the sum of its proper divisors (24811278933376).

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

20117072534624 is a wasteful number, since it uses less digits than its factorization.

20117072534624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782560 (or 1782552 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 20117072534624 in words is "twenty trillion, one hundred seventeen billion, seventy-two million, five hundred thirty-four thousand, six hundred twenty-four".