64394012167 has 4 divisors (see below), whose sum is σ = 64402586136. Its totient is φ = 64385438200.

The previous prime is 64394012147. The next prime is 64394012171. The reversal of 64394012167 is 76121049346.

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 64394012167 - 2¹⁵ = 64393979399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64394012147) 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, 4275709 + ... + 4290742.

It is an arithmetic number, because the mean of its divisors is an integer number (16100646534).

Almost surely, 2^64394012167 is an apocalyptic number.

64394012167 is a deficient number, since it is larger than the sum of its proper divisors (8573969).

64394012167 is an equidigital number, since it uses as much as digits as its factorization.

64394012167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573968.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 64394012167 in words is "sixty-four billion, three hundred ninety-four million, twelve thousand, one hundred sixty-seven".