17172315640 has 16 divisors (see below), whose sum is σ = 38637710280. Its totient is φ = 6868926240.

The previous prime is 17172315581. The next prime is 17172315737. The reversal of 17172315640 is 4651327171.

It is a self number, because there is not a number n which added to its sum of digits gives 17172315640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214653906 + ... + 214653985.

Almost surely, 2^17172315640 is an apocalyptic number.

17172315640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17172315640 is an abundant number, since it is smaller than the sum of its proper divisors (21465394640).

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

17172315640 is a wasteful number, since it uses less digits than its factorization.

17172315640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429307902 (or 429307898 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 17172315640 in words is "seventeen billion, one hundred seventy-two million, three hundred fifteen thousand, six hundred forty".