72615446157 has 12 divisors (see below), whose sum is σ = 99947416704. Its totient is φ = 46846998360.

The previous prime is 72615446047. The next prime is 72615446213. The reversal of 72615446157 is 75164451627.

It is not a de Polignac number, because 72615446157 - 2¹⁸ = 72615184013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72615446357) 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, 2584728 + ... + 2612670.

It is an arithmetic number, because the mean of its divisors is an integer number (8328951392).

Almost surely, 2^72615446157 is an apocalyptic number.

It is an amenable number.

72615446157 is a deficient number, since it is larger than the sum of its proper divisors (27331970547).

72615446157 is an frugal number, since it uses more digits than its factorization.

72615446157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55920 (or 27977 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The spelling of 72615446157 in words is "seventy-two billion, six hundred fifteen million, four hundred forty-six thousand, one hundred fifty-seven".