172251666933 has 16 divisors (see below), whose sum is σ = 241766123520. Its totient is φ = 108786297456.

The previous prime is 172251666883. The next prime is 172251666973. The reversal of 172251666933 is 339666152271.

It is a happy number.

It is not a de Polignac number, because 172251666933 - 2⁹ = 172251666421 is a prime.

It is a super-2 number, since 2×172251666933² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172251666973) 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, 2128966 + ... + 2208392.

It is an arithmetic number, because the mean of its divisors is an integer number (15110382720).

Almost surely, 2^172251666933 is an apocalyptic number.

It is an amenable number.

172251666933 is a deficient number, since it is larger than the sum of its proper divisors (69514456587).

172251666933 is a wasteful number, since it uses less digits than its factorization.

172251666933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117496.

The product of its digits is 2449440, while the sum is 51.

The spelling of 172251666933 in words is "one hundred seventy-two billion, two hundred fifty-one million, six hundred sixty-six thousand, nine hundred thirty-three".