15321542642 has 32 divisors (see below), whose sum is σ = 27172623744. Its totient is φ = 6342768000.

The previous prime is 15321542633. The next prime is 15321542669. The reversal of 15321542642 is 24624512351.

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 15 ways as a sum of consecutive naturals, for example, 74168 + ... + 190115.

It is an arithmetic number, because the mean of its divisors is an integer number (849144492).

Almost surely, 2^15321542642 is an apocalyptic number.

15321542642 is a deficient number, since it is larger than the sum of its proper divisors (11851081102).

15321542642 is a wasteful number, since it uses less digits than its factorization.

15321542642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264434.

The product of its digits is 57600, while the sum is 35.

The spelling of 15321542642 in words is "fifteen billion, three hundred twenty-one million, five hundred forty-two thousand, six hundred forty-two".