80684708511 has 16 divisors (see below), whose sum is σ = 117364544640. Its totient is φ = 48897753120.

The previous prime is 80684708509. The next prime is 80684708513. The reversal of 80684708511 is 11580748608.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80684708509) and next prime (80684708513).

It is not a de Polignac number, because 80684708511 - 2¹ = 80684708509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80684708513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1169956 + ... + 1236998.

It is an arithmetic number, because the mean of its divisors is an integer number (7335284040).

Almost surely, 2^80684708511 is an apocalyptic number.

80684708511 is a deficient number, since it is larger than the sum of its proper divisors (36679836129).

80684708511 is a wasteful number, since it uses less digits than its factorization.

80684708511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103526.

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 80684708511 in words is "eighty billion, six hundred eighty-four million, seven hundred eight thousand, five hundred eleven".