2172462518655 has 128 divisors (see below), whose sum is σ = 4578989184000. Its totient is φ = 963369884160.

The previous prime is 2172462518651. The next prime is 2172462518693. The reversal of 2172462518655 is 5568152642712.

2172462518655 is a `hidden beast` number, since 2 + 1 + 7 + 2 + 4 + 62 + 518 + 65 + 5 = 666.

It is not a de Polignac number, because 2172462518655 - 2² = 2172462518651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172462518651) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1588036 + ... + 2620454.

It is an arithmetic number, because the mean of its divisors is an integer number (35773353000).

Almost surely, 2^{2172462518655} is an apocalyptic number.

2172462518655 is an abundant number, since it is smaller than the sum of its proper divisors (2406526665345).

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

2172462518655 is a wasteful number, since it uses less digits than its factorization.

2172462518655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032566 (or 1032560 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 2172462518655 in words is "two trillion, one hundred seventy-two billion, four hundred sixty-two million, five hundred eighteen thousand, six hundred fifty-five".