164240243564015 has 4 divisors (see below), whose sum is σ = 197088292276824. Its totient is φ = 131392194851208.

The previous prime is 164240243564003. The next prime is 164240243564027. The reversal of 164240243564015 is 510465342042461.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (164240243564003) and next prime (164240243564027).

It is a cyclic number.

It is not a de Polignac number, because 164240243564015 - 2¹⁴ = 164240243547631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16424024356397 + ... + 16424024356406.

It is an arithmetic number, because the mean of its divisors is an integer number (49272073069206).

Almost surely, 2^{164240243564015} is an apocalyptic number.

164240243564015 is a deficient number, since it is larger than the sum of its proper divisors (32848048712809).

164240243564015 is an equidigital number, since it uses as much as digits as its factorization.

164240243564015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32848048712808.

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 164240243564015 in words is "one hundred sixty-four trillion, two hundred forty billion, two hundred forty-three million, five hundred sixty-four thousand, fifteen".