164415569923 has 24 divisors (see below), whose sum is σ = 183922401600. Its totient is φ = 146841306480.

The previous prime is 164415569849. The next prime is 164415569933. The reversal of 164415569923 is 329965514461.

It is a happy number.

It is not a de Polignac number, because 164415569923 - 2¹³ = 164415561731 is a prime.

It is a super-3 number, since 3×164415569923³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164415569933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1751968 + ... + 1843426.

It is an arithmetic number, because the mean of its divisors is an integer number (7663433400).

Almost surely, 2^164415569923 is an apocalyptic number.

164415569923 is a deficient number, since it is larger than the sum of its proper divisors (19506831677).

164415569923 is a wasteful number, since it uses less digits than its factorization.

164415569923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91743 (or 91732 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 55.

The spelling of 164415569923 in words is "one hundred sixty-four billion, four hundred fifteen million, five hundred sixty-nine thousand, nine hundred twenty-three".