775245384434 has 4 divisors (see below), whose sum is σ = 1162868076654. Its totient is φ = 387622692216.

The previous prime is 775245384341. The next prime is 775245384443. The reversal of 775245384434 is 434483542577.

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

It can be written as a sum of positive squares in only one way, i.e., 586196953225 + 189048431209 = 765635^2 + 434797^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 775245384434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193811346107 + ... + 193811346110.

Almost surely, 2^775245384434 is an apocalyptic number.

775245384434 is a deficient number, since it is larger than the sum of its proper divisors (387622692220).

775245384434 is a wasteful number, since it uses less digits than its factorization.

775245384434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387622692219.

The product of its digits is 45158400, while the sum is 56.

The spelling of 775245384434 in words is "seven hundred seventy-five billion, two hundred forty-five million, three hundred eighty-four thousand, four hundred thirty-four".