776433638442 has 48 divisors (see below), whose sum is σ = 1970614511712. Its totient is φ = 201671074080.

The previous prime is 776433638419. The next prime is 776433638471. The reversal of 776433638442 is 244836334677.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120039073 + ... + 120045540.

It is an arithmetic number, because the mean of its divisors is an integer number (41054468994).

Almost surely, 2^776433638442 is an apocalyptic number.

776433638442 is an abundant number, since it is smaller than the sum of its proper divisors (1194180873270).

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

776433638442 is a wasteful number, since it uses less digits than its factorization.

776433638442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240084643 (or 240084636 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 57.

The spelling of 776433638442 in words is "seven hundred seventy-six billion, four hundred thirty-three million, six hundred thirty-eight thousand, four hundred forty-two".