79771892256 has 528 divisors, whose sum is σ = 278201415744. Its totient is φ = 22039921152.

The previous prime is 79771892203. The next prime is 79771892281. The reversal of 79771892256 is 65229817797.

It is a super-3 number, since 3×79771892256³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 79771892193 and 79771892202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 87 ways as a sum of consecutive naturals, for example, 489398031 + ... + 489398193.

Almost surely, 2^79771892256 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 79771892256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139100707872).

79771892256 is an abundant number, since it is smaller than the sum of its proper divisors (198429523488).

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

79771892256 is an equidigital number, since it uses as much as digits as its factorization.

79771892256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 212 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 63.

The spelling of 79771892256 in words is "seventy-nine billion, seven hundred seventy-one million, eight hundred ninety-two thousand, two hundred fifty-six".