13463697997 has 4 divisors (see below), whose sum is σ = 13466959740. Its totient is φ = 13460436256.

The previous prime is 13463697959. The next prime is 13463698033. The reversal of 13463697997 is 79979636431.

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 9475270281 + 3988427716 = 97341^2 + 63154^2 .

It is a cyclic number.

It is not a de Polignac number, because 13463697997 - 2²³ = 13455309389 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 (13463697917) 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, 1624672 + ... + 1632937.

It is an arithmetic number, because the mean of its divisors is an integer number (3366739935).

Almost surely, 2^13463697997 is an apocalyptic number.

It is an amenable number.

13463697997 is a deficient number, since it is larger than the sum of its proper divisors (3261743).

13463697997 is an equidigital number, since it uses as much as digits as its factorization.

13463697997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261742.

The product of its digits is 46294416, while the sum is 64.

The spelling of 13463697997 in words is "thirteen billion, four hundred sixty-three million, six hundred ninety-seven thousand, nine hundred ninety-seven".