13781907228597 has 4 divisors (see below), whose sum is σ = 18375876304800. Its totient is φ = 9187938152396.

The previous prime is 13781907228577. The next prime is 13781907228653. The reversal of 13781907228597 is 79582270918731.

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 a cyclic number.

It is not a de Polignac number, because 13781907228597 - 2²⁸ = 13781638793141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13781907228577) 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, 2296984538097 + ... + 2296984538102.

It is an arithmetic number, because the mean of its divisors is an integer number (4593969076200).

Almost surely, 2^{13781907228597} is an apocalyptic number.

It is an amenable number.

13781907228597 is a deficient number, since it is larger than the sum of its proper divisors (4593969076203).

13781907228597 is an equidigital number, since it uses as much as digits as its factorization.

13781907228597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593969076202.

The product of its (nonzero) digits is 106686720, while the sum is 69.

The spelling of 13781907228597 in words is "thirteen trillion, seven hundred eighty-one billion, nine hundred seven million, two hundred twenty-eight thousand, five hundred ninety-seven".