80361260816 has 80 divisors (see below), whose sum is σ = 165856670208. Its totient is φ = 37652428800.

The previous prime is 80361260743. The next prime is 80361260839. The reversal of 80361260816 is 61806216308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3861896 + ... + 3882648.

Almost surely, 2^80361260816 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 80361260816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82928335104).

80361260816 is an abundant number, since it is smaller than the sum of its proper divisors (85495409392).

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

80361260816 is a wasteful number, since it uses less digits than its factorization.

80361260816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21040 (or 21034 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 80361260816 in words is "eighty billion, three hundred sixty-one million, two hundred sixty thousand, eight hundred sixteen".