172897474350 has 48 divisors (see below), whose sum is σ = 428921297280. Its totient is φ = 46091416800.

The previous prime is 172897474327. The next prime is 172897474391. The reversal of 172897474350 is 53474798271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298041 + ... + 659259.

It is an arithmetic number, because the mean of its divisors is an integer number (8935860360).

Almost surely, 2^172897474350 is an apocalyptic number.

172897474350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172897474350 is an abundant number, since it is smaller than the sum of its proper divisors (256023822930).

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

172897474350 is a wasteful number, since it uses less digits than its factorization.

172897474350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364425 (or 364420 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 172897474350 in words is "one hundred seventy-two billion, eight hundred ninety-seven million, four hundred seventy-four thousand, three hundred fifty".