172046523402 has 96 divisors (see below), whose sum is σ = 415485579600. Its totient is φ = 51087246336.

The previous prime is 172046523353. The next prime is 172046523413. The reversal of 172046523402 is 204325640271.

172046523402 is a `hidden beast` number, since 172 + 0 + 4 + 65 + 23 + 402 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 81572500881 + 90474022521 = 285609^2 + 300789^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17862724 + ... + 17872352.

Almost surely, 2^172046523402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172046523402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207742789800).

172046523402 is an abundant number, since it is smaller than the sum of its proper divisors (243439056198).

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

172046523402 is a wasteful number, since it uses less digits than its factorization.

172046523402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12312 (or 12309 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 172046523402 in words is "one hundred seventy-two billion, forty-six million, five hundred twenty-three thousand, four hundred two".