32172357855 has 48 divisors (see below), whose sum is σ = 57960961632. Its totient is φ = 15218227200.

The previous prime is 32172357853. The next prime is 32172357857. The reversal of 32172357855 is 55875327123.

It is an interprime number because it is at equal distance from previous prime (32172357853) and next prime (32172357857).

It is not a de Polignac number, because 32172357855 - 2¹ = 32172357853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32172357853) 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, 141754 + ... + 290583.

It is an arithmetic number, because the mean of its divisors is an integer number (1207520034).

Almost surely, 2^32172357855 is an apocalyptic number.

32172357855 is a deficient number, since it is larger than the sum of its proper divisors (25788603777).

32172357855 is a wasteful number, since it uses less digits than its factorization.

32172357855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432408 (or 432397 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 48.

The spelling of 32172357855 in words is "thirty-two billion, one hundred seventy-two million, three hundred fifty-seven thousand, eight hundred fifty-five".