776315623420531 has 4 divisors (see below), whose sum is σ = 810068476612752. Its totient is φ = 742562770228312.

The previous prime is 776315623420529. The next prime is 776315623420613. The reversal of 776315623420531 is 135024326513677.

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

It is a cyclic number.

It is not a de Polignac number, because 776315623420531 - 2¹ = 776315623420529 is a prime.

It is a super-2 number, since 2×776315623420531² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776315623420331) 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, 16876426596076 + ... + 16876426596121.

It is an arithmetic number, because the mean of its divisors is an integer number (202517119153188).

Almost surely, 2^{776315623420531} is an apocalyptic number.

776315623420531 is a deficient number, since it is larger than the sum of its proper divisors (33752853192221).

776315623420531 is a wasteful number, since it uses less digits than its factorization.

776315623420531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33752853192220.

The product of its (nonzero) digits is 19051200, while the sum is 55.

The spelling of 776315623420531 in words is "seven hundred seventy-six trillion, three hundred fifteen billion, six hundred twenty-three million, four hundred twenty thousand, five hundred thirty-one".