15868859042 has 16 divisors (see below), whose sum is σ = 24006316032. Its totient is φ = 7866835200.

The previous prime is 15868859023. The next prime is 15868859051. The reversal of 15868859042 is 24095886851.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387143 + ... + 426165.

It is an arithmetic number, because the mean of its divisors is an integer number (1500394752).

Almost surely, 2^15868859042 is an apocalyptic number.

15868859042 is a deficient number, since it is larger than the sum of its proper divisors (8137456990).

15868859042 is a wasteful number, since it uses less digits than its factorization.

15868859042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40753.

The product of its (nonzero) digits is 5529600, while the sum is 56.

The spelling of 15868859042 in words is "fifteen billion, eight hundred sixty-eight million, eight hundred fifty-nine thousand, forty-two".