770513655131 has 4 divisors (see below), whose sum is σ = 840560351064. Its totient is φ = 700466959200.

The previous prime is 770513655113. The next prime is 770513655209. The reversal of 770513655131 is 131556315077.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-770513655131 is a prime.

It is a super-2 number, since 2×770513655131² (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 (770513055131) 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, 35023347950 + ... + 35023347971.

It is an arithmetic number, because the mean of its divisors is an integer number (210140087766).

Almost surely, 2^770513655131 is an apocalyptic number.

770513655131 is a deficient number, since it is larger than the sum of its proper divisors (70046695933).

770513655131 is a wasteful number, since it uses less digits than its factorization.

770513655131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70046695932.

The product of its (nonzero) digits is 330750, while the sum is 44.

The spelling of 770513655131 in words is "seven hundred seventy billion, five hundred thirteen million, six hundred fifty-five thousand, one hundred thirty-one".