721934471932 has 24 divisors (see below), whose sum is σ = 1335947985792. Its totient is φ = 340803052800.

The previous prime is 721934471887. The next prime is 721934471933. The reversal of 721934471932 is 239174439127.

It is a happy number.

721934471932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 721934471932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721934471933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70995553 + ... + 71005720.

It is an arithmetic number, because the mean of its divisors is an integer number (55664499408).

Almost surely, 2^721934471932 is an apocalyptic number.

It is an amenable number.

721934471932 is a deficient number, since it is larger than the sum of its proper divisors (614013513860).

721934471932 is a wasteful number, since it uses less digits than its factorization.

721934471932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142001349 (or 142001347 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The spelling of 721934471932 in words is "seven hundred twenty-one billion, nine hundred thirty-four million, four hundred seventy-one thousand, nine hundred thirty-two".