769315389438 has 8 divisors (see below), whose sum is σ = 1538630778888. Its totient is φ = 256438463144.

The previous prime is 769315389431. The next prime is 769315389457. The reversal of 769315389438 is 834983513967.

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

769315389438 is an admirable number.

It is a super-2 number, since 2×769315389438² (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 (769315389431) 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, 64109615781 + ... + 64109615792.

It is an arithmetic number, because the mean of its divisors is an integer number (192328847361).

Almost surely, 2^769315389438 is an apocalyptic number.

769315389438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

769315389438 is a wasteful number, since it uses less digits than its factorization.

769315389438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128219231578.

The product of its digits is 117573120, while the sum is 66.

The spelling of 769315389438 in words is "seven hundred sixty-nine billion, three hundred fifteen million, three hundred eighty-nine thousand, four hundred thirty-eight".