172204883892 has 18 divisors (see below), whose sum is σ = 435295678818. Its totient is φ = 57401627952.

The previous prime is 172204883891. The next prime is 172204883911. The reversal of 172204883892 is 298388402271.

172204883892 is a `hidden beast` number, since 1 + 72 + 2 + 0 + 488 + 3 + 8 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117563951376 + 54640932516 = 342876^2 + 233754^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172204883891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2391734463 + ... + 2391734534.

Almost surely, 2^172204883892 is an apocalyptic number.

172204883892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172204883892 is an abundant number, since it is smaller than the sum of its proper divisors (263090794926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172204883892 is a wasteful number, since it uses less digits than its factorization.

172204883892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783469007 (or 4783469002 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 172204883892 in words is "one hundred seventy-two billion, two hundred four million, eight hundred eighty-three thousand, eight hundred ninety-two".