36861561865687 has 8 divisors (see below), whose sum is σ = 39700267916400. Its totient is φ = 34023313142400.

The previous prime is 36861561865663. The next prime is 36861561865717. The reversal of 36861561865687 is 78656816516863.

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

It is a cyclic number.

It is not a de Polignac number, because 36861561865687 - 2¹⁹ = 36861561341399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36861561865627) 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, 114164437 + ... + 114486862.

It is an arithmetic number, because the mean of its divisors is an integer number (4962533489550).

Almost surely, 2^{36861561865687} is an apocalyptic number.

36861561865687 is a deficient number, since it is larger than the sum of its proper divisors (2838706050713).

36861561865687 is a wasteful number, since it uses less digits than its factorization.

36861561865687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228663713.

The product of its digits is 2090188800, while the sum is 76.

The spelling of 36861561865687 in words is "thirty-six trillion, eight hundred sixty-one billion, five hundred sixty-one million, eight hundred sixty-five thousand, six hundred eighty-seven".