72557532311 has 8 divisors (see below), whose sum is σ = 79168866048. Its totient is φ = 65948731000.

The previous prime is 72557532293. The next prime is 72557532347. The reversal of 72557532311 is 11323575527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72557532311 - 2²² = 72553338007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72557532361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572945 + ... + 688026.

It is an arithmetic number, because the mean of its divisors is an integer number (9896108256).

Almost surely, 2^72557532311 is an apocalyptic number.

72557532311 is a deficient number, since it is larger than the sum of its proper divisors (6611333737).

72557532311 is a wasteful number, since it uses less digits than its factorization.

72557532311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266213.

The product of its digits is 220500, while the sum is 41.

The spelling of 72557532311 in words is "seventy-two billion, five hundred fifty-seven million, five hundred thirty-two thousand, three hundred eleven".