80257886381 has 4 divisors (see below), whose sum is σ = 81618189600. Its totient is φ = 78897583164.

The previous prime is 80257886369. The next prime is 80257886407. The reversal of 80257886381 is 18368875208.

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 not a de Polignac number, because 80257886381 - 2²⁶ = 80190777517 is a prime.

It is a super-2 number, since 2×80257886381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80257889381) 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, 680151521 + ... + 680151638.

It is an arithmetic number, because the mean of its divisors is an integer number (20404547400).

Almost surely, 2^80257886381 is an apocalyptic number.

It is an amenable number.

80257886381 is a deficient number, since it is larger than the sum of its proper divisors (1360303219).

80257886381 is a wasteful number, since it uses less digits than its factorization.

80257886381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360303218.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 80257886381 in words is "eighty billion, two hundred fifty-seven million, eight hundred eighty-six thousand, three hundred eighty-one".