194099978355 has 16 divisors (see below), whose sum is σ = 317782291200. Its totient is φ = 101112546528.

The previous prime is 194099978353. The next prime is 194099978363. The reversal of 194099978355 is 553879990491.

It is not a de Polignac number, because 194099978355 - 2¹ = 194099978353 is a prime.

It is a super-2 number, since 2×194099978355² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194099978355.

It is not an unprimeable number, because it can be changed into a prime (194099978353) 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, 150464455 + ... + 150465744.

It is an arithmetic number, because the mean of its divisors is an integer number (19861393200).

Almost surely, 2^194099978355 is an apocalyptic number.

194099978355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

194099978355 is a deficient number, since it is larger than the sum of its proper divisors (123682312845).

194099978355 is a wasteful number, since it uses less digits than its factorization.

194099978355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300930250.

The product of its (nonzero) digits is 110224800, while the sum is 69.

The spelling of 194099978355 in words is "one hundred ninety-four billion, ninety-nine million, nine hundred seventy-eight thousand, three hundred fifty-five".