18642468715 has 8 divisors (see below), whose sum is σ = 24091805808. Its totient is φ = 13766746080.

The previous prime is 18642468709. The next prime is 18642468763. The reversal of 18642468715 is 51786424681.

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

It is a de Polignac number, because none of the positive numbers 2^k-18642468715 is a prime.

It is a Duffinian number.

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, 143403541 + ... + 143403670.

It is an arithmetic number, because the mean of its divisors is an integer number (3011475726).

Almost surely, 2^18642468715 is an apocalyptic number.

18642468715 is a deficient number, since it is larger than the sum of its proper divisors (5449337093).

18642468715 is a wasteful number, since it uses less digits than its factorization.

18642468715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286807229.

The product of its digits is 2580480, while the sum is 52.

The spelling of 18642468715 in words is "eighteen billion, six hundred forty-two million, four hundred sixty-eight thousand, seven hundred fifteen".