55172743432 has 16 divisors (see below), whose sum is σ = 109534123260. Its totient is φ = 25963643904.

The previous prime is 55172743363. The next prime is 55172743469. The reversal of 55172743432 is 23434727155.

It can be written as a sum of positive squares in 2 ways, for example, as 55100050756 + 72692676 = 234734^2 + 8526^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202840833 + ... + 202841104.

Almost surely, 2^55172743432 is an apocalyptic number.

It is an amenable number.

55172743432 is a deficient number, since it is larger than the sum of its proper divisors (54361379828).

55172743432 is a wasteful number, since it uses less digits than its factorization.

55172743432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405681960 (or 405681956 counting only the distinct ones).

The product of its digits is 705600, while the sum is 43.

The spelling of 55172743432 in words is "fifty-five billion, one hundred seventy-two million, seven hundred forty-three thousand, four hundred thirty-two".