632142127138 has 16 divisors (see below), whose sum is σ = 966130840440. Its totient is φ = 310098845056.

The previous prime is 632142127087. The next prime is 632142127139. The reversal of 632142127138 is 831721241236.

It can be written as a sum of positive squares in 4 ways, for example, as 617879318809 + 14262808329 = 786053^2 + 119427^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 632142127138.

It is not an unprimeable number, because it can be changed into a prime (632142127139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5549856 + ... + 5662612.

Almost surely, 2^632142127138 is an apocalyptic number.

632142127138 is a deficient number, since it is larger than the sum of its proper divisors (333988713302).

632142127138 is a wasteful number, since it uses less digits than its factorization.

632142127138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165701.

The product of its digits is 96768, while the sum is 40.

The spelling of 632142127138 in words is "six hundred thirty-two billion, one hundred forty-two million, one hundred twenty-seven thousand, one hundred thirty-eight".