80879647156 has 288 divisors, whose sum is σ = 190886298624. Its totient is φ = 29857766400.

The previous prime is 80879647141. The next prime is 80879647183. The reversal of 80879647156 is 65174697808.

It is a junction number, because it is equal to n+sod(n) for n = 80879647094 and 80879647103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 590362320 + ... + 590362456.

It is an arithmetic number, because the mean of its divisors is an integer number (662799648).

Almost surely, 2^80879647156 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 80879647156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95443149312).

80879647156 is an abundant number, since it is smaller than the sum of its proper divisors (110006651468).

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

80879647156 is a wasteful number, since it uses less digits than its factorization.

80879647156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 80879647156 in words is "eighty billion, eight hundred seventy-nine million, six hundred forty-seven thousand, one hundred fifty-six".