775673307831 has 4 divisors (see below), whose sum is σ = 1034231077112. Its totient is φ = 517115538552.

The previous prime is 775673307793. The next prime is 775673307883. The reversal of 775673307831 is 138703376577.

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

It is not a de Polignac number, because 775673307831 - 2¹⁵ = 775673275063 is a prime.

It is a super-2 number, since 2×775673307831² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (795673307831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129278884636 + ... + 129278884641.

It is an arithmetic number, because the mean of its divisors is an integer number (258557769278).

Almost surely, 2^775673307831 is an apocalyptic number.

775673307831 is a deficient number, since it is larger than the sum of its proper divisors (258557769281).

775673307831 is a wasteful number, since it uses less digits than its factorization.

775673307831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258557769280.

The product of its (nonzero) digits is 15558480, while the sum is 57.

The spelling of 775673307831 in words is "seven hundred seventy-five billion, six hundred seventy-three million, three hundred seven thousand, eight hundred thirty-one".