747447744747 has 16 divisors (see below), whose sum is σ = 1091065760640. Its totient is φ = 451386532800.

The previous prime is 747447744739. The next prime is 747447744793.

747447744747 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 747447744747 - 2³ = 747447744739 is a prime.

It is a super-2 number, since 2×747447744747² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (747447744047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40293097 + ... + 40311642.

It is an arithmetic number, because the mean of its divisors is an integer number (68191610040).

Almost surely, 2^747447744747 is an apocalyptic number.

747447744747 is a deficient number, since it is larger than the sum of its proper divisors (343618015893).

747447744747 is a wasteful number, since it uses less digits than its factorization.

747447744747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80605034.

The product of its digits is 481890304, while the sum is 66.

The spelling of 747447744747 in words is "seven hundred forty-seven billion, four hundred forty-seven million, seven hundred forty-four thousand, seven hundred forty-seven".