164258797545 has 24 divisors (see below), whose sum is σ = 284738423112. Its totient is φ = 87597561600.

The previous prime is 164258797529. The next prime is 164258797579. The reversal of 164258797545 is 545797852461.

It is a happy number.

164258797545 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 5 + 87 + 9 + 7 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10271619801 + 153987177744 = 101349^2 + 392412^2 .

It is not a de Polignac number, because 164258797545 - 2⁴ = 164258797529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435715 + ... + 719975.

It is an arithmetic number, because the mean of its divisors is an integer number (11864100963).

Almost surely, 2^164258797545 is an apocalyptic number.

164258797545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164258797545 is a deficient number, since it is larger than the sum of its proper divisors (120479625567).

164258797545 is a wasteful number, since it uses less digits than its factorization.

164258797545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297113 (or 297110 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 63.

The spelling of 164258797545 in words is "one hundred sixty-four billion, two hundred fifty-eight million, seven hundred ninety-seven thousand, five hundred forty-five".