766742427840 has 112 divisors (see below), whose sum is σ = 2500202113632. Its totient is φ = 198938566656.

The previous prime is 766742427791. The next prime is 766742427863. The reversal of 766742427840 is 48724247667.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10757589 + ... + 10828628.

Almost surely, 2^766742427840 is an apocalyptic number.

It is an amenable number.

766742427840 is an abundant number, since it is smaller than the sum of its proper divisors (1733459685792).

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

766742427840 is a wasteful number, since it uses less digits than its factorization.

766742427840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21586274 (or 21586264 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 57.

The spelling of 766742427840 in words is "seven hundred sixty-six billion, seven hundred forty-two million, four hundred twenty-seven thousand, eight hundred forty".