236164640645 has 8 divisors (see below), whose sum is σ = 300068014104. Its totient is φ = 177818082304.

The previous prime is 236164640627. The next prime is 236164640653. The reversal of 236164640645 is 546046461632.

It can be written as a sum of positive squares in 4 ways, for example, as 7808726689 + 228355913956 = 88367^2 + 477866^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 236164640645 - 2⁶ = 236164640581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 236164640645.

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, 1389203684 + ... + 1389203853.

It is an arithmetic number, because the mean of its divisors is an integer number (37508501763).

Almost surely, 2^236164640645 is an apocalyptic number.

It is an amenable number.

236164640645 is a deficient number, since it is larger than the sum of its proper divisors (63903373459).

236164640645 is a wasteful number, since it uses less digits than its factorization.

236164640645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778407559.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 236164640645 in words is "two hundred thirty-six billion, one hundred sixty-four million, six hundred forty thousand, six hundred forty-five".