191450386895616 has 432 divisors, whose sum is σ = 601863103457280. Its totient is φ = 60018072698880.

The previous prime is 191450386895567. The next prime is 191450386895617. The reversal of 191450386895616 is 616598683054191.

191450386895616 is a `hidden beast` number, since 1 + 9 + 1 + 4 + 50 + 3 + 8 + 6 + 8 + 9 + 561 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (191450386895617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2730640401 + ... + 2730710511.

Almost surely, 2^{191450386895616} is an apocalyptic number.

191450386895616 is a gapful number since it is divisible by the number (16) 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 191450386895616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300931551728640).

191450386895616 is an abundant number, since it is smaller than the sum of its proper divisors (410412716561664).

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

191450386895616 is a wasteful number, since it uses less digits than its factorization.

191450386895616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71537 (or 71500 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 72.

The spelling of 191450386895616 in words is "one hundred ninety-one trillion, four hundred fifty billion, three hundred eighty-six million, eight hundred ninety-five thousand, six hundred sixteen".