164693506479 has 16 divisors (see below), whose sum is σ = 223530248448. Its totient is φ = 107835944832.

The previous prime is 164693506447. The next prime is 164693506511. The reversal of 164693506479 is 974605396461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (164693506447) and next prime (164693506511).

It is not a de Polignac number, because 164693506479 - 2⁵ = 164693506447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164693506979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147947 + ... + 1283420.

It is an arithmetic number, because the mean of its divisors is an integer number (13970640528).

Almost surely, 2^164693506479 is an apocalyptic number.

164693506479 is a deficient number, since it is larger than the sum of its proper divisors (58836741969).

164693506479 is a wasteful number, since it uses less digits than its factorization.

164693506479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431774.

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 164693506479 in words is "one hundred sixty-four billion, six hundred ninety-three million, five hundred six thousand, four hundred seventy-nine".