721136337675 has 48 divisors (see below), whose sum is σ = 1305041659488. Its totient is φ = 349200921600.

The previous prime is 721136337671. The next prime is 721136337689. The reversal of 721136337675 is 576733631127.

721136337675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 721136337675 - 2² = 721136337671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (721136337671) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6003042 + ... + 6121991.

It is an arithmetic number, because the mean of its divisors is an integer number (27188367906).

Almost surely, 2^721136337675 is an apocalyptic number.

721136337675 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

721136337675 is a deficient number, since it is larger than the sum of its proper divisors (583905321813).

721136337675 is a wasteful number, since it uses less digits than its factorization.

721136337675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125120 (or 12125115 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 51.

The spelling of 721136337675 in words is "seven hundred twenty-one billion, one hundred thirty-six million, three hundred thirty-seven thousand, six hundred seventy-five".