80734064691 has 32 divisors (see below), whose sum is σ = 123514454016. Its totient is φ = 45949860000.

The previous prime is 80734064687. The next prime is 80734064701. The reversal of 80734064691 is 19646043708.

It is not a de Polignac number, because 80734064691 - 2² = 80734064687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80734064691.

It is not an unprimeable number, because it can be changed into a prime (80734065691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7995556 + ... + 8005646.

It is an arithmetic number, because the mean of its divisors is an integer number (3859826688).

Almost surely, 2^80734064691 is an apocalyptic number.

80734064691 is a deficient number, since it is larger than the sum of its proper divisors (42780389325).

80734064691 is a wasteful number, since it uses less digits than its factorization.

80734064691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11583.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 80734064691 in words is "eighty billion, seven hundred thirty-four million, sixty-four thousand, six hundred ninety-one".