172417016640 has 224 divisors, whose sum is σ = 598245980544. Its totient is φ = 41724149760.

The previous prime is 172417016587. The next prime is 172417016641. The reversal of 172417016640 is 46610714271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172417016641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6078972 + ... + 6107268.

Almost surely, 2^172417016640 is an apocalyptic number.

172417016640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172417016640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299122990272).

172417016640 is an abundant number, since it is smaller than the sum of its proper divisors (425828963904).

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

172417016640 is a wasteful number, since it uses less digits than its factorization.

172417016640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28905 (or 28895 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 172417016640 in words is "one hundred seventy-two billion, four hundred seventeen million, sixteen thousand, six hundred forty".