195889172416 has 28 divisors (see below), whose sum is σ = 444248659888. Its totient is φ = 83952502272.

The previous prime is 195889172389. The next prime is 195889172419. The reversal of 195889172416 is 614271988591.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195889172419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218625861 + ... + 218626756.

Almost surely, 2^195889172416 is an apocalyptic number.

195889172416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

195889172416 is an abundant number, since it is smaller than the sum of its proper divisors (248359487472).

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

195889172416 is an equidigital number, since it uses as much as digits as its factorization.

195889172416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437252636 (or 437252626 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 61.

The spelling of 195889172416 in words is "one hundred ninety-five billion, eight hundred eighty-nine million, one hundred seventy-two thousand, four hundred sixteen".