164467894499 has 4 divisors (see below), whose sum is σ = 165515460864. Its totient is φ = 163420328136.

The previous prime is 164467894463. The next prime is 164467894559. The reversal of 164467894499 is 994498764461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994498764461 = 13933 ⋅71377217.

It is a cyclic number.

It is not a de Polignac number, because 164467894499 - 2⁸ = 164467894243 is a prime.

It is a super-2 number, since 2×164467894499² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164467894099) 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, 523782947 + ... + 523783260.

It is an arithmetic number, because the mean of its divisors is an integer number (41378865216).

Almost surely, 2^164467894499 is an apocalyptic number.

164467894499 is a deficient number, since it is larger than the sum of its proper divisors (1047566365).

164467894499 is a wasteful number, since it uses less digits than its factorization.

164467894499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047566364.

The product of its digits is 376233984, while the sum is 71.

The spelling of 164467894499 in words is "one hundred sixty-four billion, four hundred sixty-seven million, eight hundred ninety-four thousand, four hundred ninety-nine".