36861767791 has 4 divisors (see below), whose sum is σ = 36862182000. Its totient is φ = 36861353584.

The previous prime is 36861767753. The next prime is 36861767797. The reversal of 36861767791 is 19776716863.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36861767791 - 2¹⁷ = 36861636719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36861767797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12931 + ... + 271828.

It is an arithmetic number, because the mean of its divisors is an integer number (9215545500).

Almost surely, 2^36861767791 is an apocalyptic number.

36861767791 is a deficient number, since it is larger than the sum of its proper divisors (414209).

36861767791 is a wasteful number, since it uses less digits than its factorization.

36861767791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414208.

The product of its digits is 16003008, while the sum is 61.

The spelling of 36861767791 in words is "thirty-six billion, eight hundred sixty-one million, seven hundred sixty-seven thousand, seven hundred ninety-one".