170513215680 has 112 divisors (see below), whose sum is σ = 541999444320. Its totient is φ = 45418119168.

The previous prime is 170513215661. The next prime is 170513215681. The reversal of 170513215680 is 86512315071.

It is not an unprimeable number, because it can be changed into a prime (170513215681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740656 + ... + 943184.

Almost surely, 2^170513215680 is an apocalyptic number.

170513215680 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 170513215680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270999722160).

170513215680 is an abundant number, since it is smaller than the sum of its proper divisors (371486228640).

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

170513215680 is a wasteful number, since it uses less digits than its factorization.

170513215680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203426 (or 203416 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 170513215680 in words is "one hundred seventy billion, five hundred thirteen million, two hundred fifteen thousand, six hundred eighty".