80971475240 has 16 divisors (see below), whose sum is σ = 182185819380. Its totient is φ = 32388590080.

The previous prime is 80971475237. The next prime is 80971475251. The reversal of 80971475240 is 4257417908.

It can be written as a sum of positive squares in 2 ways, for example, as 80800336516 + 171138724 = 284254^2 + 13082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012143401 + ... + 1012143480.

Almost surely, 2^80971475240 is an apocalyptic number.

It is an amenable number.

80971475240 is an abundant number, since it is smaller than the sum of its proper divisors (101214344140).

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

80971475240 is a wasteful number, since it uses less digits than its factorization.

80971475240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024286892 (or 2024286888 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 80971475240 in words is "eighty billion, nine hundred seventy-one million, four hundred seventy-five thousand, two hundred forty".