166126254315535 has 16 divisors (see below), whose sum is σ = 203126025394656. Its totient is φ = 130384981853568.

The previous prime is 166126254315529. The next prime is 166126254315547. The reversal of 166126254315535 is 535513452621661.

It is a cyclic number.

It is not a de Polignac number, because 166126254315535 - 2⁹ = 166126254315023 is a prime.

It is a super-2 number, since 2×166126254315535² (a number of 29 digits) contains 22 as substring.

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, 16229844 + ... + 24406153.

It is an arithmetic number, because the mean of its divisors is an integer number (12695376587166).

Almost surely, 2^{166126254315535} is an apocalyptic number.

166126254315535 is a deficient number, since it is larger than the sum of its proper divisors (36999771079121).

166126254315535 is a wasteful number, since it uses less digits than its factorization.

166126254315535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40651482.

The product of its digits is 19440000, while the sum is 55.

The spelling of 166126254315535 in words is "one hundred sixty-six trillion, one hundred twenty-six billion, two hundred fifty-four million, three hundred fifteen thousand, five hundred thirty-five".