164973833433 has 20 divisors (see below), whose sum is σ = 254940410340. Its totient is φ = 106190052192.

The previous prime is 164973833419. The next prime is 164973833459. The reversal of 164973833433 is 334338379461.

164973833433 is a `hidden beast` number, since 1 + 64 + 9 + 73 + 83 + 3 + 433 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106221890889 + 58751942544 = 325917^2 + 242388^2 .

It is not a de Polignac number, because 164973833433 - 2²² = 164969639129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164973833433.

It is not an unprimeable number, because it can be changed into a prime (164973833413) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35113410 + ... + 35118107.

It is an arithmetic number, because the mean of its divisors is an integer number (12747020517).

Almost surely, 2^164973833433 is an apocalyptic number.

It is an amenable number.

164973833433 is a deficient number, since it is larger than the sum of its proper divisors (89966576907).

164973833433 is an equidigital number, since it uses as much as digits as its factorization.

164973833433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70231558 (or 70231549 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 54.

The spelling of 164973833433 in words is "one hundred sixty-four billion, nine hundred seventy-three million, eight hundred thirty-three thousand, four hundred thirty-three".