499774767757 has 6 divisors (see below), whose sum is σ = 506181116238. Its totient is φ = 493448498712.

The previous prime is 499774767707. The next prime is 499774767763. The reversal of 499774767757 is 757767477994.

It can be written as a sum of positive squares in only one way, i.e., 457941837796 + 41832929961 = 676714^2 + 204531^2 .

It is a de Polignac number, because none of the positive numbers 2^k-499774767757 is a prime.

It is a super-2 number, since 2×499774767757² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (79).

It is the 706948-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499774767707) by changing a digit.

It is a nontrivial repunit in base 706947.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40033398 + ... + 40045879.

It is an arithmetic number, because the mean of its divisors is an integer number (84363519373).

Almost surely, 2^499774767757 is an apocalyptic number.

It is an amenable number.

499774767757 is a deficient number, since it is larger than the sum of its proper divisors (6406348481).

499774767757 is an frugal number, since it uses more digits than its factorization.

499774767757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80079435 (or 80079356 counting only the distinct ones).

The product of its digits is 4574193120, while the sum is 79.

The spelling of 499774767757 in words is "four hundred ninety-nine billion, seven hundred seventy-four million, seven hundred sixty-seven thousand, seven hundred fifty-seven".