36784712661 has 4 divisors (see below), whose sum is σ = 49046283552. Its totient is φ = 24523141772.

The previous prime is 36784712639. The next prime is 36784712669. The reversal of 36784712661 is 16621748763.

It is a happy number.

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 36784712661 - 2⁶ = 36784712597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36784712669) 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, 6130785441 + ... + 6130785446.

It is an arithmetic number, because the mean of its divisors is an integer number (12261570888).

Almost surely, 2^36784712661 is an apocalyptic number.

It is an amenable number.

36784712661 is a deficient number, since it is larger than the sum of its proper divisors (12261570891).

36784712661 is a wasteful number, since it uses less digits than its factorization.

36784712661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12261570890.

The product of its digits is 2032128, while the sum is 51.

The spelling of 36784712661 in words is "thirty-six billion, seven hundred eighty-four million, seven hundred twelve thousand, six hundred sixty-one".