166415415126 has 16 divisors (see below), whose sum is σ = 336062198784. Its totient is φ = 54933243624.

The previous prime is 166415415059. The next prime is 166415415137. The reversal of 166415415126 is 621514514661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134639686 + ... + 134640921.

It is an arithmetic number, because the mean of its divisors is an integer number (21003887424).

Almost surely, 2^166415415126 is an apocalyptic number.

166415415126 is an abundant number, since it is smaller than the sum of its proper divisors (169646783658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166415415126 is a wasteful number, since it uses less digits than its factorization.

166415415126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269280715.

The product of its digits is 172800, while the sum is 42.

Adding to 166415415126 its reverse (621514514661), we get a palindrome (787929929787).

The spelling of 166415415126 in words is "one hundred sixty-six billion, four hundred fifteen million, four hundred fifteen thousand, one hundred twenty-six".