13969348864 has 81 divisors (see below), whose sum is σ = 28544819233. Its totient is φ = 6822987776.

The previous prime is 13969348843. The next prime is 13969348873. The reversal of 13969348864 is 46884396931.

The square root of 13969348864 is 118192.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2682411264 + 11286937600 = 51792^2 + 106240^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 156958932 + ... + 156959020.

Almost surely, 2^13969348864 is an apocalyptic number.

13969348864 is the 118192-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13969348864

13969348864 is an abundant number, since it is smaller than the sum of its proper divisors (14575470369).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13969348864 is an frugal number, since it uses more digits than its factorization.

13969348864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 174 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 61.

The spelling of 13969348864 in words is "thirteen billion, nine hundred sixty-nine million, three hundred forty-eight thousand, eight hundred sixty-four".