166441265532031 has 16 divisors (see below), whose sum is σ = 200232310037760. Its totient is φ = 135153817453440.

The previous prime is 166441265532011. The next prime is 166441265532067. The reversal of 166441265532031 is 130235562144661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 166441265532031 - 2¹¹ = 166441265529983 is a prime.

It is a super-2 number, since 2×166441265532031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166441265532011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5215911 + ... + 18975991.

It is an arithmetic number, because the mean of its divisors is an integer number (12514519377360).

Almost surely, 2^{166441265532031} is an apocalyptic number.

166441265532031 is a deficient number, since it is larger than the sum of its proper divisors (33791044505729).

166441265532031 is a wasteful number, since it uses less digits than its factorization.

166441265532031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13851054.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 166441265532031 in words is "one hundred sixty-six trillion, four hundred forty-one billion, two hundred sixty-five million, five hundred thirty-two thousand, thirty-one".