776491878960 has 640 divisors, whose sum is σ = 3302574336000. Its totient is φ = 167040921600.

The previous prime is 776491878907. The next prime is 776491879013. The reversal of 776491878960 is 69878194677.

776491878960 is a `hidden beast` number, since 7 + 7 + 6 + 491 + 8 + 78 + 9 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (776491878907) and next prime (776491879013).

It is a Harshad number since it is a multiple of its sum of digits (72).

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 127 ways as a sum of consecutive naturals, for example, 12564135 + ... + 12625785.

It is an arithmetic number, because the mean of its divisors is an integer number (5160272400).

Almost surely, 2^776491878960 is an apocalyptic number.

776491878960 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 776491878960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651287168000).

776491878960 is an abundant number, since it is smaller than the sum of its proper divisors (2526082457040).

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

776491878960 is a wasteful number, since it uses less digits than its factorization.

776491878960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61711 (or 61685 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 72.

The spelling of 776491878960 in words is "seven hundred seventy-six billion, four hundred ninety-one million, eight hundred seventy-eight thousand, nine hundred sixty".