36646431005 has 16 divisors (see below), whose sum is σ = 44193651840. Its totient is φ = 29172211392.

The previous prime is 36646430993. The next prime is 36646431011. The reversal of 36646431005 is 50013464663.

It is a cyclic number.

It is not a de Polignac number, because 36646431005 - 2¹⁸ = 36646168861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36646431005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816407 + ... + 860123.

It is an arithmetic number, because the mean of its divisors is an integer number (2762103240).

Almost surely, 2^36646431005 is an apocalyptic number.

It is an amenable number.

36646431005 is a deficient number, since it is larger than the sum of its proper divisors (7547220835).

36646431005 is a wasteful number, since it uses less digits than its factorization.

36646431005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44548.

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 36646431005 its reverse (50013464663), we get a palindrome (86659895668).

The spelling of 36646431005 in words is "thirty-six billion, six hundred forty-six million, four hundred thirty-one thousand, five".