36861768209 has 16 divisors (see below), whose sum is σ = 42298813056. Its totient is φ = 31467744000.

The previous prime is 36861768199. The next prime is 36861768239. The reversal of 36861768209 is 90286716863.

It is not a de Polignac number, because 36861768209 - 2²⁴ = 36844990993 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36861768239) 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, 1845494 + ... + 1865360.

It is an arithmetic number, because the mean of its divisors is an integer number (2643675816).

Almost surely, 2^36861768209 is an apocalyptic number.

It is an amenable number.

36861768209 is a deficient number, since it is larger than the sum of its proper divisors (5437044847).

36861768209 is a wasteful number, since it uses less digits than its factorization.

36861768209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20936.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 36861768209 in words is "thirty-six billion, eight hundred sixty-one million, seven hundred sixty-eight thousand, two hundred nine".