770843673856 has 72 divisors (see below), whose sum is σ = 1579016686464. Its totient is φ = 375350538240.

The previous prime is 770843673827. The next prime is 770843673877. The reversal of 770843673856 is 658376348077.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5844025 + ... + 5974471.

It is an arithmetic number, because the mean of its divisors is an integer number (21930787312).

Almost surely, 2^770843673856 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 770843673856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789508343232).

770843673856 is an abundant number, since it is smaller than the sum of its proper divisors (808173012608).

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

770843673856 is a wasteful number, since it uses less digits than its factorization.

770843673856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131067 (or 131053 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 64.

The spelling of 770843673856 in words is "seven hundred seventy billion, eight hundred forty-three million, six hundred seventy-three thousand, eight hundred fifty-six".