15855614423 has 32 divisors (see below), whose sum is σ = 18549264384. Its totient is φ = 13416480000.

The previous prime is 15855614389. The next prime is 15855614429. The reversal of 15855614423 is 32441655851.

It is not a de Polignac number, because 15855614423 - 2²⁰ = 15854565847 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15855614429) 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 31 ways as a sum of consecutive naturals, for example, 984665 + ... + 1000637.

It is an arithmetic number, because the mean of its divisors is an integer number (579664512).

Almost surely, 2^15855614423 is an apocalyptic number.

15855614423 is a deficient number, since it is larger than the sum of its proper divisors (2693649961).

15855614423 is a wasteful number, since it uses less digits than its factorization.

15855614423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16127.

The product of its digits is 576000, while the sum is 44.

The spelling of 15855614423 in words is "fifteen billion, eight hundred fifty-five million, six hundred fourteen thousand, four hundred twenty-three".