36641644723 has 16 divisors (see below), whose sum is σ = 38718743040. Its totient is φ = 34579591200.

The previous prime is 36641644703. The next prime is 36641644729. The reversal of 36641644723 is 32744614663.

It is a cyclic number.

It is not a de Polignac number, because 36641644723 - 2¹³ = 36641636531 is a prime.

It is a super-2 number, since 2×36641644723² (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 (36641644729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14972886 + ... + 14975332.

It is an arithmetic number, because the mean of its divisors is an integer number (2419921440).

Almost surely, 2^36641644723 is an apocalyptic number.

36641644723 is a deficient number, since it is larger than the sum of its proper divisors (2077098317).

36641644723 is a wasteful number, since it uses less digits than its factorization.

36641644723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178.

The product of its digits is 1741824, while the sum is 46.

The spelling of 36641644723 in words is "thirty-six billion, six hundred forty-one million, six hundred forty-four thousand, seven hundred twenty-three".