172372235327 has 4 divisors (see below), whose sum is σ = 172526553576. Its totient is φ = 172217917080.

The previous prime is 172372235311. The next prime is 172372235341. The reversal of 172372235327 is 723532273271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 723532273271 = 59 ⋅12263258869.

It is a cyclic number.

It is not a de Polignac number, because 172372235327 - 2⁴ = 172372235311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172372235027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77157449 + ... + 77159682.

It is an arithmetic number, because the mean of its divisors is an integer number (43131638394).

Almost surely, 2^172372235327 is an apocalyptic number.

172372235327 is a deficient number, since it is larger than the sum of its proper divisors (154318249).

172372235327 is a wasteful number, since it uses less digits than its factorization.

172372235327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154318248.

The product of its digits is 740880, while the sum is 44.

The spelling of 172372235327 in words is "one hundred seventy-two billion, three hundred seventy-two million, two hundred thirty-five thousand, three hundred twenty-seven".