80555076657541 has 4 divisors (see below), whose sum is σ = 80555135719500. Its totient is φ = 80555017595584.

The previous prime is 80555076657499. The next prime is 80555076657563. The reversal of 80555076657541 is 14575667055508.

It is a happy number.

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 46164944881441 + 34390131776100 = 6794479^2 + 5864310^2 .

It is a cyclic number.

It is not a de Polignac number, because 80555076657541 - 2³⁷ = 80417637704069 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 (80555076657841) 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, 27435556 + ... + 30229453.

It is an arithmetic number, because the mean of its divisors is an integer number (20138783929875).

Almost surely, 2^{80555076657541} is an apocalyptic number.

It is an amenable number.

80555076657541 is a deficient number, since it is larger than the sum of its proper divisors (59061959).

80555076657541 is a wasteful number, since it uses less digits than its factorization.

80555076657541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59061958.

The product of its (nonzero) digits is 176400000, while the sum is 64.

The spelling of 80555076657541 in words is "eighty trillion, five hundred fifty-five billion, seventy-six million, six hundred fifty-seven thousand, five hundred forty-one".