166014405416531 has 4 divisors (see below), whose sum is σ = 189730749047472. Its totient is φ = 142298061785592.

The previous prime is 166014405416443. The next prime is 166014405416533. The reversal of 166014405416531 is 135614504410661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166014405416531 - 2¹⁴ = 166014405400147 is a prime.

It is a super-2 number, since 2×166014405416531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166014405416533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11858171815460 + ... + 11858171815473.

It is an arithmetic number, because the mean of its divisors is an integer number (47432687261868).

Almost surely, 2^{166014405416531} is an apocalyptic number.

166014405416531 is a deficient number, since it is larger than the sum of its proper divisors (23716343630941).

166014405416531 is an equidigital number, since it uses as much as digits as its factorization.

166014405416531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23716343630940.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 166014405416531 in words is "one hundred sixty-six trillion, fourteen billion, four hundred five million, four hundred sixteen thousand, five hundred thirty-one".