747356042257 has 6 divisors (see below), whose sum is σ = 821473996994. Its totient is φ = 679414583760.

The previous prime is 747356042239. The next prime is 747356042297. The reversal of 747356042257 is 752240653747.

It can be written as a sum of positive squares in only one way, i.e., 655523406736 + 91832635521 = 809644^2 + 303039^2 .

It is a de Polignac number, because none of the positive numbers 2^k-747356042257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747356042207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3088247988 + ... + 3088248229.

Almost surely, 2^747356042257 is an apocalyptic number.

It is an amenable number.

747356042257 is a deficient number, since it is larger than the sum of its proper divisors (74117954737).

747356042257 is a wasteful number, since it uses less digits than its factorization.

747356042257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176496239 (or 6176496228 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 52.

The spelling of 747356042257 in words is "seven hundred forty-seven billion, three hundred fifty-six million, forty-two thousand, two hundred fifty-seven".