72479955446 has 16 divisors (see below), whose sum is σ = 110948940000. Its totient is φ = 35503639488.

The previous prime is 72479955433. The next prime is 72479955487. The reversal of 72479955446 is 64455997427.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644146 + ... + 1687653.

It is an arithmetic number, because the mean of its divisors is an integer number (6934308750).

Almost surely, 2^72479955446 is an apocalyptic number.

72479955446 is a deficient number, since it is larger than the sum of its proper divisors (38468984554).

72479955446 is a wasteful number, since it uses less digits than its factorization.

72479955446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332023.

The product of its digits is 76204800, while the sum is 62.

The spelling of 72479955446 in words is "seventy-two billion, four hundred seventy-nine million, nine hundred fifty-five thousand, four hundred forty-six".