775245384464 has 20 divisors (see below), whose sum is σ = 1581092561040. Its totient is φ = 367221497760.

The previous prime is 775245384443. The next prime is 775245384491. The reversal of 775245384464 is 464483542577.

It is a super-2 number, since 2×775245384464² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275074342 + ... + 1275074949.

It is an arithmetic number, because the mean of its divisors is an integer number (79054628052).

Almost surely, 2^775245384464 is an apocalyptic number.

It is an amenable number.

775245384464 is an abundant number, since it is smaller than the sum of its proper divisors (805847176576).

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

775245384464 is a wasteful number, since it uses less digits than its factorization.

775245384464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550149318 (or 2550149312 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 59.

The spelling of 775245384464 in words is "seven hundred seventy-five billion, two hundred forty-five million, three hundred eighty-four thousand, four hundred sixty-four".