72646026511615 has 16 divisors (see below), whose sum is σ = 89051431772160. Its totient is φ = 56866615898400.

The previous prime is 72646026511589. The next prime is 72646026511627. The reversal of 72646026511615 is 51611562064627.

It is not a de Polignac number, because 72646026511615 - 2⁹ = 72646026511103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36186861 + ... + 38141590.

It is an arithmetic number, because the mean of its divisors is an integer number (5565714485760).

Almost surely, 2^{72646026511615} is an apocalyptic number.

72646026511615 is a deficient number, since it is larger than the sum of its proper divisors (16405405260545).

72646026511615 is a wasteful number, since it uses less digits than its factorization.

72646026511615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74332662.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 72646026511615 in words is "seventy-two trillion, six hundred forty-six billion, twenty-six million, five hundred eleven thousand, six hundred fifteen".