20860002187 has 8 divisors (see below), whose sum is σ = 20915744832. Its totient is φ = 20804294400.

The previous prime is 20860002143. The next prime is 20860002197. The reversal of 20860002187 is 78120006802.

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-20860002187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20860002127) 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, 1552237 + ... + 1565617.

It is an arithmetic number, because the mean of its divisors is an integer number (2614468104).

Almost surely, 2^20860002187 is an apocalyptic number.

20860002187 is a deficient number, since it is larger than the sum of its proper divisors (55742645).

20860002187 is a wasteful number, since it uses less digits than its factorization.

20860002187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17429.

The product of its (nonzero) digits is 10752, while the sum is 34.

Adding to 20860002187 its reverse (78120006802), we get a palindrome (98980008989).

The spelling of 20860002187 in words is "twenty billion, eight hundred sixty million, two thousand, one hundred eighty-seven".