166415264125 has 16 divisors (see below), whose sum is σ = 226566819648. Its totient is φ = 121029282000.

The previous prime is 166415264101. The next prime is 166415264131. The reversal of 166415264125 is 521462514661.

It is not a de Polignac number, because 166415264125 - 2⁷ = 166415263997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60513267 + ... + 60516016.

It is an arithmetic number, because the mean of its divisors is an integer number (14160426228).

Almost surely, 2^166415264125 is an apocalyptic number.

It is an amenable number.

166415264125 is a deficient number, since it is larger than the sum of its proper divisors (60151555523).

166415264125 is a wasteful number, since it uses less digits than its factorization.

166415264125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121029309 (or 121029299 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

Adding to 166415264125 its reverse (521462514661), we get a palindrome (687877778786).

The spelling of 166415264125 in words is "one hundred sixty-six billion, four hundred fifteen million, two hundred sixty-four thousand, one hundred twenty-five".