80998486077 has 4 divisors (see below), whose sum is σ = 107997981440. Its totient is φ = 53998990716.

The previous prime is 80998486073. The next prime is 80998486097. The reversal of 80998486077 is 77068489908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80998486077 - 2² = 80998486073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80998485999 and 80998486017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80998486073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13499747677 + ... + 13499747682.

It is an arithmetic number, because the mean of its divisors is an integer number (26999495360).

Almost surely, 2^80998486077 is an apocalyptic number.

It is an amenable number.

80998486077 is a deficient number, since it is larger than the sum of its proper divisors (26999495363).

80998486077 is a wasteful number, since it uses less digits than its factorization.

80998486077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26999495362.

The product of its (nonzero) digits is 48771072, while the sum is 66.

The spelling of 80998486077 in words is "eighty billion, nine hundred ninety-eight million, four hundred eighty-six thousand, seventy-seven".