194785151999999 has 16 divisors (see below), whose sum is σ = 224993620290816. Its totient is φ = 166660244284800.

The previous prime is 194785151999993. The next prime is 194785152000007. The reversal of 194785151999999 is 999999151587491.

It is a cyclic number.

It is not a de Polignac number, because 194785151999999 - 2¹⁶ = 194785151934463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194785151999993) 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, 35661014 + ... + 40758780.

It is an arithmetic number, because the mean of its divisors is an integer number (14062101268176).

Almost surely, 2^{194785151999999} is an apocalyptic number.

194785151999999 is a deficient number, since it is larger than the sum of its proper divisors (30208468290817).

194785151999999 is a wasteful number, since it uses less digits than its factorization.

194785151999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302126.

The product of its digits is 26784626400, while the sum is 95.

The spelling of 194785151999999 in words is "one hundred ninety-four trillion, seven hundred eighty-five billion, one hundred fifty-one million, nine hundred ninety-nine thousand, nine hundred ninety-nine".