166501413241523 has 8 divisors (see below), whose sum is σ = 166542030075696. Its totient is φ = 166460799859200.

The previous prime is 166501413241411. The next prime is 166501413241531. The reversal of 166501413241523 is 325142314105661.

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 166501413241523 - 2²² = 166501409047219 is a prime.

It is a super-2 number, since 2×166501413241523² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166501413541523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96968903 + ... + 98671023.

It is an arithmetic number, because the mean of its divisors is an integer number (20817753759462).

Almost surely, 2^{166501413241523} is an apocalyptic number.

166501413241523 is a deficient number, since it is larger than the sum of its proper divisors (40616834173).

166501413241523 is a wasteful number, since it uses less digits than its factorization.

166501413241523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725925.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 166501413241523 in words is "one hundred sixty-six trillion, five hundred one billion, four hundred thirteen million, two hundred forty-one thousand, five hundred twenty-three".