164719371897 has 12 divisors (see below), whose sum is σ = 237932185920. Its totient is φ = 109810974168.

The previous prime is 164719371857. The next prime is 164719371959. The reversal of 164719371897 is 798173917461.

164719371897 is a `hidden beast` number, since 1 + 6 + 471 + 9 + 3 + 71 + 8 + 97 = 666.

It is not a de Polignac number, because 164719371897 - 2²⁴ = 164702594681 is a prime.

It is a super-3 number, since 3×164719371897³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (164719371857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 533004 + ... + 783282.

It is an arithmetic number, because the mean of its divisors is an integer number (19827682160).

Almost surely, 2^164719371897 is an apocalyptic number.

It is an amenable number.

164719371897 is a deficient number, since it is larger than the sum of its proper divisors (73212814023).

164719371897 is a wasteful number, since it uses less digits than its factorization.

164719371897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323412 (or 323409 counting only the distinct ones).

The product of its digits is 16003008, while the sum is 63.

The spelling of 164719371897 in words is "one hundred sixty-four billion, seven hundred nineteen million, three hundred seventy-one thousand, eight hundred ninety-seven".