36664012443647 has 4 divisors (see below), whose sum is σ = 36669320690376. Its totient is φ = 36658704196920.

The previous prime is 36664012443613. The next prime is 36664012443649. The reversal of 36664012443647 is 74634421046663.

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 36664012443647 - 2⁸ = 36664012443391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36664012443592 and 36664012443601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36664012443649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654113004 + ... + 2654126817.

It is an arithmetic number, because the mean of its divisors is an integer number (9167330172594).

Almost surely, 2^{36664012443647} is an apocalyptic number.

36664012443647 is a deficient number, since it is larger than the sum of its proper divisors (5308246729).

36664012443647 is an equidigital number, since it uses as much as digits as its factorization.

36664012443647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308246728.

The product of its (nonzero) digits is 41803776, while the sum is 56.

The spelling of 36664012443647 in words is "thirty-six trillion, six hundred sixty-four billion, twelve million, four hundred forty-three thousand, six hundred forty-seven".