80947963776 has 128 divisors (see below), whose sum is σ = 230410656000. Its totient is φ = 25089302528.

The previous prime is 80947963753. The next prime is 80947963777. The reversal of 80947963776 is 67736974908.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80947963777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467125 + ... + 616523.

It is an arithmetic number, because the mean of its divisors is an integer number (1800083250).

Almost surely, 2^80947963776 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 80947963776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115205328000).

80947963776 is an abundant number, since it is smaller than the sum of its proper divisors (149462692224).

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

80947963776 is a wasteful number, since it uses less digits than its factorization.

80947963776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149516 (or 149504 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 66.

The spelling of 80947963776 in words is "eighty billion, nine hundred forty-seven million, nine hundred sixty-three thousand, seven hundred seventy-six".