166396592501 has 8 divisors (see below), whose sum is σ = 176267110680. Its totient is φ = 156535239168.

The previous prime is 166396592489. The next prime is 166396592519. The reversal of 166396592501 is 105295693661.

It can be written as a sum of positive squares in 4 ways, for example, as 303665476 + 166092927025 = 17426^2 + 407545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166396592501 - 2¹⁰ = 166396591477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166396592801) 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 7 ways as a sum of consecutive naturals, for example, 2253806 + ... + 2326463.

It is an arithmetic number, because the mean of its divisors is an integer number (22033388835).

Almost surely, 2^166396592501 is an apocalyptic number.

It is an amenable number.

166396592501 is a deficient number, since it is larger than the sum of its proper divisors (9870518179).

166396592501 is a wasteful number, since it uses less digits than its factorization.

166396592501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582423.

The product of its (nonzero) digits is 2624400, while the sum is 53.

The spelling of 166396592501 in words is "one hundred sixty-six billion, three hundred ninety-six million, five hundred ninety-two thousand, five hundred one".