172450346640 has 160 divisors (see below), whose sum is σ = 628057051776. Its totient is φ = 38590279680.

The previous prime is 172450346609. The next prime is 172450346669. The reversal of 172450346640 is 46643054271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 172450346592 and 172450346601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2478069 + ... + 2546708.

Almost surely, 2^172450346640 is an apocalyptic number.

172450346640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172450346640 is an abundant number, since it is smaller than the sum of its proper divisors (455606705136).

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

172450346640 is a wasteful number, since it uses less digits than its factorization.

172450346640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024817 (or 5024811 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 172450346640 in words is "one hundred seventy-two billion, four hundred fifty million, three hundred forty-six thousand, six hundred forty".