721230407076 has 12 divisors (see below), whose sum is σ = 1682870949872. Its totient is φ = 240410135688.

The previous prime is 721230407057. The next prime is 721230407077. The reversal of 721230407076 is 670704032127.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (721230407077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30051266950 + ... + 30051266973.

Almost surely, 2^721230407076 is an apocalyptic number.

It is an amenable number.

721230407076 is an abundant number, since it is smaller than the sum of its proper divisors (961640542796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

721230407076 is a wasteful number, since it uses less digits than its factorization.

721230407076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60102533930 (or 60102533928 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 39.

The spelling of 721230407076 in words is "seven hundred twenty-one billion, two hundred thirty million, four hundred seven thousand, seventy-six".