771131648631 has 8 divisors (see below), whose sum is σ = 1053252983664. Its totient is φ = 501549039680.

The previous prime is 771131648627. The next prime is 771131648641. The reversal of 771131648631 is 136846131177.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 771131648631 - 2² = 771131648627 is a prime.

It is a super-2 number, since 2×771131648631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771131648641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3134681376 + ... + 3134681621.

It is an arithmetic number, because the mean of its divisors is an integer number (131656622958).

Almost surely, 2^771131648631 is an apocalyptic number.

771131648631 is a deficient number, since it is larger than the sum of its proper divisors (282121335033).

771131648631 is a wasteful number, since it uses less digits than its factorization.

771131648631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269363041.

The product of its digits is 508032, while the sum is 48.

The spelling of 771131648631 in words is "seven hundred seventy-one billion, one hundred thirty-one million, six hundred forty-eight thousand, six hundred thirty-one".