19713259311464 has 16 divisors (see below), whose sum is σ = 36963191578500. Its totient is φ = 9856408223872.

The previous prime is 19713259311457. The next prime is 19713259311481. The reversal of 19713259311464 is 46411395231791.

It can be written as a sum of positive squares in 2 ways, for example, as 19126120248964 + 587139062500 = 4373342^2 + 766250^2 .

It is a super-2 number, since 2×19713259311464² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27300317 + ... + 28013100.

Almost surely, 2^{19713259311464} is an apocalyptic number.

It is an amenable number.

19713259311464 is a deficient number, since it is larger than the sum of its proper divisors (17249932267036).

19713259311464 is a wasteful number, since it uses less digits than its factorization.

19713259311464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55357972 (or 55357968 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The spelling of 19713259311464 in words is "nineteen trillion, seven hundred thirteen billion, two hundred fifty-nine million, three hundred eleven thousand, four hundred sixty-four".