20087286609 has 16 divisors (see below), whose sum is σ = 30361352000. Its totient is φ = 11710806336.

The previous prime is 20087286577. The next prime is 20087286671. The reversal of 20087286609 is 90668278002.

It is a happy number.

It is not a de Polignac number, because 20087286609 - 2⁵ = 20087286577 is a prime.

It is a super-2 number, since 2×20087286609² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20087286679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13553434 + ... + 13554915.

It is an arithmetic number, because the mean of its divisors is an integer number (1897584500).

Almost surely, 2^20087286609 is an apocalyptic number.

It is an amenable number.

20087286609 is a deficient number, since it is larger than the sum of its proper divisors (10274065391).

20087286609 is a wasteful number, since it uses less digits than its factorization.

20087286609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27108384.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 20087286609 in words is "twenty billion, eighty-seven million, two hundred eighty-six thousand, six hundred nine".