72557286197 has 4 divisors (see below), whose sum is σ = 79153403136. Its totient is φ = 65961169260.

The previous prime is 72557286167. The next prime is 72557286229. The reversal of 72557286197 is 79168275527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79168275527 = 11 ⋅7197115957.

It is a cyclic number.

It is not a de Polignac number, because 72557286197 - 2⁶ = 72557286133 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 (72557286167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3298058453 + ... + 3298058474.

It is an arithmetic number, because the mean of its divisors is an integer number (19788350784).

Almost surely, 2^72557286197 is an apocalyptic number.

It is an amenable number.

72557286197 is a deficient number, since it is larger than the sum of its proper divisors (6596116939).

72557286197 is a wasteful number, since it uses less digits than its factorization.

72557286197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596116938.

The product of its digits is 14817600, while the sum is 59.

The spelling of 72557286197 in words is "seventy-two billion, five hundred fifty-seven million, two hundred eighty-six thousand, one hundred ninety-seven".