166623526411015 has 16 divisors (see below), whose sum is σ = 208642197348288. Its totient is φ = 127502875374336.

The previous prime is 166623526410973. The next prime is 166623526411079. The reversal of 166623526411015 is 510114625326661.

It is a cyclic number.

It is not a de Polignac number, because 166623526411015 - 2²³ = 166623518022407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166623526411015.

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, 45782977 + ... + 49288213.

It is an arithmetic number, because the mean of its divisors is an integer number (13040137334268).

Almost surely, 2^{166623526411015} is an apocalyptic number.

166623526411015 is a deficient number, since it is larger than the sum of its proper divisors (42018670937273).

166623526411015 is a wasteful number, since it uses less digits than its factorization.

166623526411015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918618.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 166623526411015 in words is "one hundred sixty-six trillion, six hundred twenty-three billion, five hundred twenty-six million, four hundred eleven thousand, fifteen".