72720367265 has 32 divisors (see below), whose sum is σ = 108002522880. Its totient is φ = 45772395264.

The previous prime is 72720367199. The next prime is 72720367273. The reversal of 72720367265 is 56276302727.

It is a cyclic number.

It is not a de Polignac number, because 72720367265 - 2¹⁴ = 72720350881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364994 + ... + 527883.

It is an arithmetic number, because the mean of its divisors is an integer number (3375078840).

Almost surely, 2^72720367265 is an apocalyptic number.

It is an amenable number.

72720367265 is a deficient number, since it is larger than the sum of its proper divisors (35282155615).

72720367265 is a wasteful number, since it uses less digits than its factorization.

72720367265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893081.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 72720367265 in words is "seventy-two billion, seven hundred twenty million, three hundred sixty-seven thousand, two hundred sixty-five".