213253007172 has 24 divisors (see below), whose sum is σ = 498723825600. Its totient is φ = 70922410656.

The previous prime is 213253007167. The next prime is 213253007243. The reversal of 213253007172 is 271700352312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20235147 + ... + 20245682.

It is an arithmetic number, because the mean of its divisors is an integer number (20780159400).

Almost surely, 2^213253007172 is an apocalyptic number.

It is an amenable number.

213253007172 is an abundant number, since it is smaller than the sum of its proper divisors (285470818428).

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

213253007172 is a wasteful number, since it uses less digits than its factorization.

213253007172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40481275 (or 40481273 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

Adding to 213253007172 its reverse (271700352312), we get a palindrome (484953359484).

The spelling of 213253007172 in words is "two hundred thirteen billion, two hundred fifty-three million, seven thousand, one hundred seventy-two".