776775136313 has 4 divisors (see below), whose sum is σ = 847391057808. Its totient is φ = 706159214820.

The previous prime is 776775136301. The next prime is 776775136321. The reversal of 776775136313 is 313631577677.

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 776775136313 - 2¹⁶ = 776775070777 is a prime.

It is a super-2 number, since 2×776775136313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776775136393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35307960731 + ... + 35307960752.

It is an arithmetic number, because the mean of its divisors is an integer number (211847764452).

Almost surely, 2^776775136313 is an apocalyptic number.

It is an amenable number.

776775136313 is a deficient number, since it is larger than the sum of its proper divisors (70615921495).

776775136313 is a wasteful number, since it uses less digits than its factorization.

776775136313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70615921494.

The product of its digits is 11668860, while the sum is 56.

The spelling of 776775136313 in words is "seven hundred seventy-six billion, seven hundred seventy-five million, one hundred thirty-six thousand, three hundred thirteen".