816067080972 has 72 divisors (see below), whose sum is σ = 2423471952720. Its totient is φ = 228270510720.

The previous prime is 816067080949. The next prime is 816067080977. The reversal of 816067080972 is 279080760618.

It is not an unprimeable number, because it can be changed into a prime (816067080977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79255447 + ... + 79265742.

Almost surely, 2^816067080972 is an apocalyptic number.

It is an amenable number.

816067080972 is an abundant number, since it is smaller than the sum of its proper divisors (1607404871748).

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

816067080972 is a wasteful number, since it uses less digits than its factorization.

816067080972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158521223 (or 158521218 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 816067080972 in words is "eight hundred sixteen billion, sixty-seven million, eighty thousand, nine hundred seventy-two".