36805661804 has 24 divisors (see below), whose sum is σ = 65325870960. Its totient is φ = 18141387264.

The previous prime is 36805661791. The next prime is 36805661807. The reversal of 36805661804 is 40816650863.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (36805661807) 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, 553412 + ... + 616340.

It is an arithmetic number, because the mean of its divisors is an integer number (2721911290).

Almost surely, 2^36805661804 is an apocalyptic number.

It is an amenable number.

36805661804 is a deficient number, since it is larger than the sum of its proper divisors (28520209156).

36805661804 is a wasteful number, since it uses less digits than its factorization.

36805661804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65009 (or 65007 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 36805661804 in words is "thirty-six billion, eight hundred five million, six hundred sixty-one thousand, eight hundred four".