80959034477 has 4 divisors (see below), whose sum is σ = 82933645116. Its totient is φ = 78984423840.

The previous prime is 80959034441. The next prime is 80959034479. The reversal of 80959034477 is 77443095908.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4940824681 + 76018209796 = 70291^2 + 275714^2 .

It is a cyclic number.

It is not a de Polignac number, because 80959034477 - 2¹⁴ = 80959018093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80959034479) 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, 987305258 + ... + 987305339.

It is an arithmetic number, because the mean of its divisors is an integer number (20733411279).

Almost surely, 2^80959034477 is an apocalyptic number.

It is an amenable number.

80959034477 is a deficient number, since it is larger than the sum of its proper divisors (1974610639).

80959034477 is a wasteful number, since it uses less digits than its factorization.

80959034477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974610638.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 80959034477 in words is "eighty billion, nine hundred fifty-nine million, thirty-four thousand, four hundred seventy-seven".