36699411821 has 4 divisors (see below), whose sum is σ = 36816662652. Its totient is φ = 36582160992.

The previous prime is 36699411787. The next prime is 36699411839. The reversal of 36699411821 is 12811499663.

36699411821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 216501796 + 36482910025 = 14714^2 + 191005^2 .

It is a cyclic number.

It is not a de Polignac number, because 36699411821 - 2⁶ = 36699411757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36699411821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36699411841) 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, 58624946 + ... + 58625571.

It is an arithmetic number, because the mean of its divisors is an integer number (9204165663).

Almost surely, 2^36699411821 is an apocalyptic number.

It is an amenable number.

36699411821 is a deficient number, since it is larger than the sum of its proper divisors (117250831).

36699411821 is a wasteful number, since it uses less digits than its factorization.

36699411821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117250830.

The product of its digits is 559872, while the sum is 50.

The spelling of 36699411821 in words is "thirty-six billion, six hundred ninety-nine million, four hundred eleven thousand, eight hundred twenty-one".