766992680640 has 784 divisors, whose sum is σ = 2797070522688. Its totient is φ = 200204255232.

The previous prime is 766992680627. The next prime is 766992680719. The reversal of 766992680640 is 46086299667.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 3291813964 + ... + 3291814196.

Almost surely, 2^766992680640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766992680640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1398535261344).

766992680640 is an abundant number, since it is smaller than the sum of its proper divisors (2030077842048).

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

766992680640 is a wasteful number, since it uses less digits than its factorization.

766992680640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 766992680640 in words is "seven hundred sixty-six billion, nine hundred ninety-two million, six hundred eighty thousand, six hundred forty".