171860461440 has 64 divisors (see below), whose sum is σ = 547805226960. Its totient is φ = 45829455872.

The previous prime is 171860461439. The next prime is 171860461447. The reversal of 171860461440 is 44164068171.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 171860461392 and 171860461401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171860461447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44753409 + ... + 44757248.

Almost surely, 2^171860461440 is an apocalyptic number.

171860461440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171860461440 is an abundant number, since it is smaller than the sum of its proper divisors (375944765520).

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

171860461440 is an equidigital number, since it uses as much as digits as its factorization.

171860461440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89510679 (or 89510667 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 171860461440 in words is "one hundred seventy-one billion, eight hundred sixty million, four hundred sixty-one thousand, four hundred forty".