13917600197 has 4 divisors (see below), whose sum is σ = 13918021740. Its totient is φ = 13917178656.

The previous prime is 13917600091. The next prime is 13917600217. The reversal of 13917600197 is 79100671931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12525862561 + 1391737636 = 111919^2 + 37306^2 .

It is a cyclic number.

It is not a de Polignac number, because 13917600197 - 2²⁴ = 13900822981 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 (13917605197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156608 + ... + 228825.

It is an arithmetic number, because the mean of its divisors is an integer number (3479505435).

Almost surely, 2^13917600197 is an apocalyptic number.

It is an amenable number.

13917600197 is a deficient number, since it is larger than the sum of its proper divisors (421543).

13917600197 is an equidigital number, since it uses as much as digits as its factorization.

13917600197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421542.

The product of its (nonzero) digits is 71442, while the sum is 44.

The spelling of 13917600197 in words is "thirteen billion, nine hundred seventeen million, six hundred thousand, one hundred ninety-seven".