72266776515 has 24 divisors (see below), whose sum is σ = 125468823168. Its totient is φ = 38478769920.

The previous prime is 72266776499. The next prime is 72266776523. The reversal of 72266776515 is 51567766227.

It is not a de Polignac number, because 72266776515 - 2⁴ = 72266776499 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1295526 + ... + 1350155.

It is an arithmetic number, because the mean of its divisors is an integer number (5227867632).

Almost surely, 2^72266776515 is an apocalyptic number.

72266776515 is a deficient number, since it is larger than the sum of its proper divisors (53202046653).

72266776515 is a wasteful number, since it uses less digits than its factorization.

72266776515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646299 (or 2646296 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 54.

The spelling of 72266776515 in words is "seventy-two billion, two hundred sixty-six million, seven hundred seventy-six thousand, five hundred fifteen".