72356557229 has 16 divisors (see below), whose sum is σ = 79190389824. Its totient is φ = 65565676800.

The previous prime is 72356557183. The next prime is 72356557237. The reversal of 72356557229 is 92275565327.

It is a cyclic number.

It is not a de Polignac number, because 72356557229 - 2³⁶ = 3637080493 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 (72356557289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5570987 + ... + 5583959.

It is an arithmetic number, because the mean of its divisors is an integer number (4949399364).

Almost surely, 2^72356557229 is an apocalyptic number.

It is an amenable number.

72356557229 is a deficient number, since it is larger than the sum of its proper divisors (6833832595).

72356557229 is a wasteful number, since it uses less digits than its factorization.

72356557229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14588.

The product of its digits is 7938000, while the sum is 53.

The spelling of 72356557229 in words is "seventy-two billion, three hundred fifty-six million, five hundred fifty-seven thousand, two hundred twenty-nine".