16387565489 has 8 divisors (see below), whose sum is σ = 16542556800. Its totient is φ = 16233174576.

The previous prime is 16387565483. The next prime is 16387565507. The reversal of 16387565489 is 98456578361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16387565489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16387565483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95159 + ... + 204524.

It is an arithmetic number, because the mean of its divisors is an integer number (2067819600).

Almost surely, 2^16387565489 is an apocalyptic number.

It is an amenable number.

16387565489 is a deficient number, since it is larger than the sum of its proper divisors (154991311).

16387565489 is a wasteful number, since it uses less digits than its factorization.

16387565489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300199.

The product of its digits is 43545600, while the sum is 62.

The spelling of 16387565489 in words is "sixteen billion, three hundred eighty-seven million, five hundred sixty-five thousand, four hundred eighty-nine".