80866070015 has 4 divisors (see below), whose sum is σ = 97039284024. Its totient is φ = 64692856008.

The previous prime is 80866070003. The next prime is 80866070029. The reversal of 80866070015 is 51007066808.

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

It is a cyclic number.

It is not a de Polignac number, because 80866070015 - 2⁶ = 80866069951 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 8086606997 + ... + 8086607006.

It is an arithmetic number, because the mean of its divisors is an integer number (24259821006).

Almost surely, 2^80866070015 is an apocalyptic number.

80866070015 is a deficient number, since it is larger than the sum of its proper divisors (16173214009).

80866070015 is a wasteful number, since it uses less digits than its factorization.

80866070015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16173214008.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 80866070015 in words is "eighty billion, eight hundred sixty-six million, seventy thousand, fifteen".