164906645445 has 16 divisors (see below), whose sum is σ = 293167369920. Its totient is φ = 87950210832.

The previous prime is 164906645377. The next prime is 164906645447. The reversal of 164906645445 is 544546609461.

164906645445 is a `hidden beast` number, since 1 + 6 + 4 + 90 + 6 + 6 + 4 + 544 + 5 = 666.

It is not a de Polignac number, because 164906645445 - 2⁹ = 164906644933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164906645391 and 164906645400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164906645447) 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, 610765219 + ... + 610765488.

It is an arithmetic number, because the mean of its divisors is an integer number (18322960620).

Almost surely, 2^164906645445 is an apocalyptic number.

164906645445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164906645445 is a deficient number, since it is larger than the sum of its proper divisors (128260724475).

164906645445 is a wasteful number, since it uses less digits than its factorization.

164906645445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221530721 (or 1221530715 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 164906645445 in words is "one hundred sixty-four billion, nine hundred six million, six hundred forty-five thousand, four hundred forty-five".