164415569947 has 2 divisors, whose sum is σ = 164415569948. Its totient is φ = 164415569946.

The previous prime is 164415569933. The next prime is 164415570019. The reversal of 164415569947 is 749965514461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164415569947 - 2²⁷ = 164281352219 is a prime.

It is a super-3 number, since 3×164415569947³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (164415569447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82207784973 + 82207784974.

It is an arithmetic number, because the mean of its divisors is an integer number (82207784974).

Almost surely, 2^164415569947 is an apocalyptic number.

164415569947 is a deficient number, since it is larger than the sum of its proper divisors (1).

164415569947 is an equidigital number, since it uses as much as digits as its factorization.

164415569947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 61.

The spelling of 164415569947 in words is "one hundred sixty-four billion, four hundred fifteen million, five hundred sixty-nine thousand, nine hundred forty-seven".