15321383855 has 8 divisors (see below), whose sum is σ = 18416985552. Its totient is φ = 12236223808.

The previous prime is 15321383851. The next prime is 15321383863. The reversal of 15321383855 is 55838312351.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15321383855 - 2² = 15321383851 is a prime.

It is a super-2 number, since 2×15321383855² (a number of 21 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 (15321383851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2607182 + ... + 2613051.

It is an arithmetic number, because the mean of its divisors is an integer number (2302123194).

Almost surely, 2^15321383855 is an apocalyptic number.

15321383855 is a deficient number, since it is larger than the sum of its proper divisors (3095601697).

15321383855 is an equidigital number, since it uses as much as digits as its factorization.

15321383855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220825.

The product of its digits is 432000, while the sum is 44.

The spelling of 15321383855 in words is "fifteen billion, three hundred twenty-one million, three hundred eighty-three thousand, eight hundred fifty-five".