45139171281 has 16 divisors (see below), whose sum is σ = 61371953856. Its totient is φ = 29500526016.

The previous prime is 45139171229. The next prime is 45139171289. The reversal of 45139171281 is 18217193154.

It is not a de Polignac number, because 45139171281 - 2¹³ = 45139163089 is a prime.

It is a super-2 number, since 2×45139171281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45139171289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75846 + ... + 309888.

It is an arithmetic number, because the mean of its divisors is an integer number (3835747116).

Almost surely, 2^45139171281 is an apocalyptic number.

It is an amenable number.

45139171281 is a deficient number, since it is larger than the sum of its proper divisors (16232782575).

45139171281 is a wasteful number, since it uses less digits than its factorization.

45139171281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235312.

The product of its digits is 60480, while the sum is 42.

The spelling of 45139171281 in words is "forty-five billion, one hundred thirty-nine million, one hundred seventy-one thousand, two hundred eighty-one".