72154165510 has 24 divisors (see below), whose sum is σ = 151081988400. Its totient is φ = 24738570864.

The previous prime is 72154165477. The next prime is 72154165511. The reversal of 72154165510 is 1556145127.

It is a self number, because there is not a number n which added to its sum of digits gives 72154165510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72154165511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73626210 + ... + 73627189.

It is an arithmetic number, because the mean of its divisors is an integer number (6295082850).

Almost surely, 2^72154165510 is an apocalyptic number.

72154165510 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72154165510 is an abundant number, since it is smaller than the sum of its proper divisors (78927822890).

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

72154165510 is a wasteful number, since it uses less digits than its factorization.

72154165510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147253420 (or 147253413 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 72154165510 in words is "seventy-two billion, one hundred fifty-four million, one hundred sixty-five thousand, five hundred ten".