13419721798597 has 2 divisors, whose sum is σ = 13419721798598. Its totient is φ = 13419721798596.

The previous prime is 13419721798547. The next prime is 13419721798621. The reversal of 13419721798597 is 79589712791431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10701704651716 + 2718017146881 = 3271346^2 + 1648641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13419721798597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13419721798547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6709860899298 + 6709860899299.

It is an arithmetic number, because the mean of its divisors is an integer number (6709860899299).

Almost surely, 2^{13419721798597} is an apocalyptic number.

It is an amenable number.

13419721798597 is a deficient number, since it is larger than the sum of its proper divisors (1).

13419721798597 is an equidigital number, since it uses as much as digits as its factorization.

13419721798597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 73.

The spelling of 13419721798597 in words is "thirteen trillion, four hundred nineteen billion, seven hundred twenty-one million, seven hundred ninety-eight thousand, five hundred ninety-seven".