36643398686 has 16 divisors (see below), whose sum is σ = 56055121200. Its totient is φ = 17960118528.

The previous prime is 36643398677. The next prime is 36643398721. The reversal of 36643398686 is 68689334663.

It is a super-2 number, since 2×36643398686² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398201 + ... + 481508.

It is an arithmetic number, because the mean of its divisors is an integer number (3503445075).

Almost surely, 2^36643398686 is an apocalyptic number.

36643398686 is a deficient number, since it is larger than the sum of its proper divisors (19411722514).

36643398686 is a wasteful number, since it uses less digits than its factorization.

36643398686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880123.

The product of its digits is 80621568, while the sum is 62.

The spelling of 36643398686 in words is "thirty-six billion, six hundred forty-three million, three hundred ninety-eight thousand, six hundred eighty-six".