15642668234 has 8 divisors (see below), whose sum is σ = 23488170048. Its totient is φ = 7813278220.

The previous prime is 15642668221. The next prime is 15642668243. The reversal of 15642668234 is 43286624651.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025522 + ... + 4029405.

It is an arithmetic number, because the mean of its divisors is an integer number (2936021256).

Almost surely, 2^15642668234 is an apocalyptic number.

15642668234 is a deficient number, since it is larger than the sum of its proper divisors (7845501814).

15642668234 is an equidigital number, since it uses as much as digits as its factorization.

15642668234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8055900.

The product of its digits is 1658880, while the sum is 47.

The spelling of 15642668234 in words is "fifteen billion, six hundred forty-two million, six hundred sixty-eight thousand, two hundred thirty-four".