13547765497 has 4 divisors (see below), whose sum is σ = 15483160576. Its totient is φ = 11612370420.

The previous prime is 13547765479. The next prime is 13547765503. The reversal of 13547765497 is 79456774531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13547765497 - 2¹⁹ = 13547241209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13547765597) 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, 967697529 + ... + 967697542.

It is an arithmetic number, because the mean of its divisors is an integer number (3870790144).

Almost surely, 2^13547765497 is an apocalyptic number.

It is an amenable number.

13547765497 is a deficient number, since it is larger than the sum of its proper divisors (1935395079).

13547765497 is an equidigital number, since it uses as much as digits as its factorization.

13547765497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935395078.

The product of its digits is 22226400, while the sum is 58.

The spelling of 13547765497 in words is "thirteen billion, five hundred forty-seven million, seven hundred sixty-five thousand, four hundred ninety-seven".