80681502705 has 8 divisors (see below), whose sum is σ = 129090404352. Its totient is φ = 43030134768.

The previous prime is 80681502697. The next prime is 80681502709. The reversal of 80681502705 is 50720518608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80681502705 - 2³ = 80681502697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80681502709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2689383409 + ... + 2689383438.

It is an arithmetic number, because the mean of its divisors is an integer number (16136300544).

Almost surely, 2^80681502705 is an apocalyptic number.

It is an amenable number.

80681502705 is a deficient number, since it is larger than the sum of its proper divisors (48408901647).

80681502705 is a wasteful number, since it uses less digits than its factorization.

80681502705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378766855.

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 80681502705 in words is "eighty billion, six hundred eighty-one million, five hundred two thousand, seven hundred five".