216338587545 has 16 divisors (see below), whose sum is σ = 346665419712. Its totient is φ = 115206020160.

The previous prime is 216338587529. The next prime is 216338587567. The reversal of 216338587545 is 545785833612.

It is not a de Polignac number, because 216338587545 - 2⁴ = 216338587529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10899747 + ... + 10919576.

It is an arithmetic number, because the mean of its divisors is an integer number (21666588732).

Almost surely, 2^216338587545 is an apocalyptic number.

It is an amenable number.

216338587545 is a deficient number, since it is larger than the sum of its proper divisors (130326832167).

216338587545 is a wasteful number, since it uses less digits than its factorization.

216338587545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21819992.

The product of its digits is 24192000, while the sum is 57.

The spelling of 216338587545 in words is "two hundred sixteen billion, three hundred thirty-eight million, five hundred eighty-seven thousand, five hundred forty-five".