769139931967 has 4 divisors (see below), whose sum is σ = 839061743976. Its totient is φ = 699218119960.

The previous prime is 769139931949. The next prime is 769139931977.

769139931967 is nontrivially palindromic in base 10.

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 769139931967 - 2⁷ = 769139931839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 769139931896 and 769139931905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769139931977) 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, 34960905988 + ... + 34960906009.

It is an arithmetic number, because the mean of its divisors is an integer number (209765435994).

Almost surely, 2^769139931967 is an apocalyptic number.

769139931967 is a deficient number, since it is larger than the sum of its proper divisors (69921812009).

769139931967 is a wasteful number, since it uses less digits than its factorization.

769139931967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69921812008.

The product of its digits is 104162436, while the sum is 70.

The spelling of 769139931967 in words is "seven hundred sixty-nine billion, one hundred thirty-nine million, nine hundred thirty-one thousand, nine hundred sixty-seven".