164799699749 has 2 divisors, whose sum is σ = 164799699750. Its totient is φ = 164799699748.

The previous prime is 164799699731. The next prime is 164799699767. The reversal of 164799699749 is 947996997461.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (164799699731) and next prime (164799699767).

It can be written as a sum of positive squares in only one way, i.e., 82613130625 + 82186569124 = 287425^2 + 286682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164799699749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164799699719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82399849874 + 82399849875.

It is an arithmetic number, because the mean of its divisors is an integer number (82399849875).

Almost surely, 2^164799699749 is an apocalyptic number.

It is an amenable number.

164799699749 is a deficient number, since it is larger than the sum of its proper divisors (1).

164799699749 is an equidigital number, since it uses as much as digits as its factorization.

164799699749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666598976, while the sum is 80.

The spelling of 164799699749 in words is "one hundred sixty-four billion, seven hundred ninety-nine million, six hundred ninety-nine thousand, seven hundred forty-nine".