15423142505 has 8 divisors (see below), whose sum is σ = 18821462400. Its totient is φ = 12129386416.

The previous prime is 15423142459. The next prime is 15423142561. The reversal of 15423142505 is 50524132451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15423142505 is a prime.

It is an unprimeable number.

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, 26140625 + ... + 26141214.

It is an arithmetic number, because the mean of its divisors is an integer number (2352682800).

Almost surely, 2^15423142505 is an apocalyptic number.

It is an amenable number.

15423142505 is a deficient number, since it is larger than the sum of its proper divisors (3398319895).

15423142505 is an equidigital number, since it uses as much as digits as its factorization.

15423142505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52281903.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 15423142505 its reverse (50524132451), we get a palindrome (65947274956).

The spelling of 15423142505 in words is "fifteen billion, four hundred twenty-three million, one hundred forty-two thousand, five hundred five".