80921270976 has 448 divisors, whose sum is σ = 273393017856. Its totient is φ = 20555366400.

The previous prime is 80921270951. The next prime is 80921270977. The reversal of 80921270976 is 67907212908.

It is a tau number, because it is divible by the number of its divisors (448).

It is not an unprimeable number, because it can be changed into a prime (80921270977) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59456536 + ... + 59457896.

It is an arithmetic number, because the mean of its divisors is an integer number (610252272).

Almost surely, 2^80921270976 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 80921270976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136696508928).

80921270976 is an abundant number, since it is smaller than the sum of its proper divisors (192471746880).

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

80921270976 is a wasteful number, since it uses less digits than its factorization.

80921270976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 80921270976 in words is "eighty billion, nine hundred twenty-one million, two hundred seventy thousand, nine hundred seventy-six".