766021336256 has 112 divisors (see below), whose sum is σ = 1679760895488. Its totient is φ = 343699200000.

The previous prime is 766021336253. The next prime is 766021336259. The reversal of 766021336256 is 652633120667.

It is an interprime number because it is at equal distance from previous prime (766021336253) and next prime (766021336259).

It is a self number, because there is not a number n which added to its sum of digits gives 766021336256.

It is not an unprimeable number, because it can be changed into a prime (766021336253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22679381 + ... + 22713131.

Almost surely, 2^766021336256 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 766021336256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839880447744).

766021336256 is an abundant number, since it is smaller than the sum of its proper divisors (913739559232).

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

766021336256 is a wasteful number, since it uses less digits than its factorization.

766021336256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34190 (or 34180 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 766021336256 in words is "seven hundred sixty-six billion, twenty-one million, three hundred thirty-six thousand, two hundred fifty-six".