36749606821 has 4 divisors (see below), whose sum is σ = 36788414112. Its totient is φ = 36710799532.

The previous prime is 36749606819. The next prime is 36749606837. The reversal of 36749606821 is 12860694763.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36749606821 - 2¹ = 36749606819 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 (36749606851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19402225 + ... + 19404118.

It is an arithmetic number, because the mean of its divisors is an integer number (9197103528).

Almost surely, 2^36749606821 is an apocalyptic number.

It is an amenable number.

36749606821 is a deficient number, since it is larger than the sum of its proper divisors (38807291).

36749606821 is an equidigital number, since it uses as much as digits as its factorization.

36749606821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38807290.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 36749606821 in words is "thirty-six billion, seven hundred forty-nine million, six hundred six thousand, eight hundred twenty-one".