15319944806399 has 4 divisors (see below), whose sum is σ = 15320045155800. Its totient is φ = 15319844457000.

The previous prime is 15319944806381. The next prime is 15319944806401. The reversal of 15319944806399 is 99360844991351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15319944806399 - 2³⁶ = 15251225329663 is a prime.

It is a super-2 number, since 2×15319944806399² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15319944806329) 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, 49945352 + ... + 50251149.

It is an arithmetic number, because the mean of its divisors is an integer number (3830011288950).

Almost surely, 2^{15319944806399} is an apocalyptic number.

15319944806399 is a deficient number, since it is larger than the sum of its proper divisors (100349401).

15319944806399 is a wasteful number, since it uses less digits than its factorization.

15319944806399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100349400.

The product of its (nonzero) digits is 226748160, while the sum is 71.

The spelling of 15319944806399 in words is "fifteen trillion, three hundred nineteen billion, nine hundred forty-four million, eight hundred six thousand, three hundred ninety-nine".