36668371723 has 4 divisors (see below), whose sum is σ = 36671718328. Its totient is φ = 36665025120.

The previous prime is 36668371721. The next prime is 36668371769. The reversal of 36668371723 is 32717386663.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 36668371723 - 2¹ = 36668371721 is a prime.

It is a super-2 number, since 2×36668371723² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36668371721) 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, 1656813 + ... + 1678798.

It is an arithmetic number, because the mean of its divisors is an integer number (9167929582).

Almost surely, 2^36668371723 is an apocalyptic number.

36668371723 is a deficient number, since it is larger than the sum of its proper divisors (3346605).

36668371723 is a wasteful number, since it uses less digits than its factorization.

36668371723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346604.

The product of its digits is 4572288, while the sum is 52.

The spelling of 36668371723 in words is "thirty-six billion, six hundred sixty-eight million, three hundred seventy-one thousand, seven hundred twenty-three".