13194105640 has 32 divisors (see below), whose sum is σ = 30710421000. Its totient is φ = 5095654144.

The previous prime is 13194105623. The next prime is 13194105689. The reversal of 13194105640 is 4650149131.

It can be written as a sum of positive squares in 4 ways, for example, as 12630612996 + 563492644 = 112386^2 + 23738^2 .

It is a super-3 number, since 3×13194105640³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13194105596 and 13194105605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5685955 + ... + 5688274.

Almost surely, 2^13194105640 is an apocalyptic number.

13194105640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13194105640 is an abundant number, since it is smaller than the sum of its proper divisors (17516315360).

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

13194105640 is a wasteful number, since it uses less digits than its factorization.

13194105640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11374269 (or 11374265 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 13194105640 in words is "thirteen billion, one hundred ninety-four million, one hundred five thousand, six hundred forty".