771742218944 has 28 divisors (see below), whose sum is σ = 1532497824000. Its totient is φ = 385601035008.

The previous prime is 771742218941. The next prime is 771742219067. The reversal of 771742218944 is 449812247177.

It is a self number, because there is not a number n which added to its sum of digits gives 771742218944.

It is not an unprimeable number, because it can be changed into a prime (771742218941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4127744 + ... + 4310655.

Almost surely, 2^771742218944 is an apocalyptic number.

It is an amenable number.

771742218944 is a deficient number, since it is larger than the sum of its proper divisors (760755605056).

771742218944 is a wasteful number, since it uses less digits than its factorization.

771742218944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8439840 (or 8439830 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 56.

The spelling of 771742218944 in words is "seven hundred seventy-one billion, seven hundred forty-two million, two hundred eighteen thousand, nine hundred forty-four".