80099521497 has 6 divisors (see below), whose sum is σ = 115699308842. Its totient is φ = 53399680992.

The previous prime is 80099521483. The next prime is 80099521501. The reversal of 80099521497 is 79412599008.

It can be written as a sum of positive squares in only one way, i.e., 79917028416 + 182493081 = 282696^2 + 13509^2 .

It is not a de Polignac number, because 80099521497 - 2⁶ = 80099521433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80099521477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4449973408 + ... + 4449973425.

Almost surely, 2^80099521497 is an apocalyptic number.

It is an amenable number.

80099521497 is a deficient number, since it is larger than the sum of its proper divisors (35599787345).

80099521497 is a wasteful number, since it uses less digits than its factorization.

80099521497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899946839 (or 8899946836 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 80099521497 in words is "eighty billion, ninety-nine million, five hundred twenty-one thousand, four hundred ninety-seven".