80642105271 has 48 divisors (see below), whose sum is σ = 146697847296. Its totient is φ = 41547256128.

The previous prime is 80642105249. The next prime is 80642105273. The reversal of 80642105271 is 17250124608.

80642105271 is a `hidden beast` number, since 8 + 0 + 642 + 1 + 0 + 5 + 2 + 7 + 1 = 666.

It is not a de Polignac number, because 80642105271 - 2⁵ = 80642105239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80642105273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1109715 + ... + 1180148.

It is an arithmetic number, because the mean of its divisors is an integer number (3056205152).

Almost surely, 2^80642105271 is an apocalyptic number.

80642105271 is a deficient number, since it is larger than the sum of its proper divisors (66055742025).

80642105271 is a wasteful number, since it uses less digits than its factorization.

80642105271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289932 (or 2289929 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 80642105271 its reverse (17250124608), we get a palindrome (97892229879).

The spelling of 80642105271 in words is "eighty billion, six hundred forty-two million, one hundred five thousand, two hundred seventy-one".