747252420621 has 16 divisors (see below), whose sum is σ = 1177934851200. Its totient is φ = 412277197248.

The previous prime is 747252420619. The next prime is 747252420623. The reversal of 747252420621 is 126024252747.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (747252420619) and next prime (747252420623).

It is not a de Polignac number, because 747252420621 - 2¹ = 747252420619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747252420623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613507126 + ... + 613508343.

It is an arithmetic number, because the mean of its divisors is an integer number (73620928200).

Almost surely, 2^747252420621 is an apocalyptic number.

It is an amenable number.

747252420621 is a deficient number, since it is larger than the sum of its proper divisors (430682430579).

747252420621 is a wasteful number, since it uses less digits than its factorization.

747252420621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227015508.

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 747252420621 in words is "seven hundred forty-seven billion, two hundred fifty-two million, four hundred twenty thousand, six hundred twenty-one".