36641131488018 has 18 divisors (see below), whose sum is σ = 79389173867367. Its totient is φ = 12213701935500.

The previous prime is 36641131488011. The next prime is 36641131488019. The reversal of 36641131488018 is 81088413114663.

36641131488018 is a `hidden beast` number, since 3 + 6 + 6 + 411 + 3 + 148 + 80 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18320565744009 + 18320565744009 = 4280253^2 + 4280253^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4280253.

It is not an unprimeable number, because it can be changed into a prime (36641131488011) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24968143 + ... + 26394893.

Almost surely, 2^{36641131488018} is an apocalyptic number.

36641131488018 is an abundant number, since it is smaller than the sum of its proper divisors (42748042379349).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36641131488018 is an frugal number, since it uses more digits than its factorization.

36641131488018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853510 (or 1426756 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 36641131488018 in words is "thirty-six trillion, six hundred forty-one billion, one hundred thirty-one million, four hundred eighty-eight thousand, eighteen".