747139928641 has 4 divisors (see below), whose sum is σ = 786463082800. Its totient is φ = 707816774484.

The previous prime is 747139928609. The next prime is 747139928681. The reversal of 747139928641 is 146829931747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 747139928641 - 2⁵ = 747139928609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 747139928641.

It is not an unprimeable number, because it can be changed into a prime (747139928681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19661577051 + ... + 19661577088.

It is an arithmetic number, because the mean of its divisors is an integer number (196615770700).

Almost surely, 2^747139928641 is an apocalyptic number.

It is an amenable number.

747139928641 is a deficient number, since it is larger than the sum of its proper divisors (39323154159).

747139928641 is a wasteful number, since it uses less digits than its factorization.

747139928641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39323154158.

The product of its digits is 18289152, while the sum is 61.

The spelling of 747139928641 in words is "seven hundred forty-seven billion, one hundred thirty-nine million, nine hundred twenty-eight thousand, six hundred forty-one".