80201927557 has 4 divisors (see below), whose sum is σ = 80235030240. Its totient is φ = 80168824876.

The previous prime is 80201927551. The next prime is 80201927581. The reversal of 80201927557 is 75572910208.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80201927557 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 (80201927551) 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, 16547707 + ... + 16552552.

It is an arithmetic number, because the mean of its divisors is an integer number (20058757560).

Almost surely, 2^80201927557 is an apocalyptic number.

It is an amenable number.

80201927557 is a deficient number, since it is larger than the sum of its proper divisors (33102683).

80201927557 is a wasteful number, since it uses less digits than its factorization.

80201927557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33102682.

The product of its (nonzero) digits is 352800, while the sum is 46.

The spelling of 80201927557 in words is "eighty billion, two hundred one million, nine hundred twenty-seven thousand, five hundred fifty-seven".