80118870631 has 4 divisors (see below), whose sum is σ = 84831745392. Its totient is φ = 75405995872.

The previous prime is 80118870593. The next prime is 80118870659. The reversal of 80118870631 is 13607881108.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-80118870631 is a prime.

It is a super-2 number, since 2×80118870631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84118870631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2356437355 + ... + 2356437388.

It is an arithmetic number, because the mean of its divisors is an integer number (21207936348).

Almost surely, 2^80118870631 is an apocalyptic number.

80118870631 is a deficient number, since it is larger than the sum of its proper divisors (4712874761).

80118870631 is a wasteful number, since it uses less digits than its factorization.

80118870631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712874760.

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 80118870631 in words is "eighty billion, one hundred eighteen million, eight hundred seventy thousand, six hundred thirty-one".