40194686499 has 16 divisors (see below), whose sum is σ = 59121912960. Its totient is φ = 24086701760.

The previous prime is 40194686383. The next prime is 40194686533. The reversal of 40194686499 is 99468649104.

It is not a de Polignac number, because 40194686499 - 2⁹ = 40194685987 is a prime.

It is a super-2 number, since 2×40194686499² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40194686099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6839877 + ... + 6845750.

It is an arithmetic number, because the mean of its divisors is an integer number (3695119560).

Almost surely, 2^40194686499 is an apocalyptic number.

40194686499 is a deficient number, since it is larger than the sum of its proper divisors (18927226461).

40194686499 is a wasteful number, since it uses less digits than its factorization.

40194686499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13685730.

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 40194686499 in words is "forty billion, one hundred ninety-four million, six hundred eighty-six thousand, four hundred ninety-nine".