166001131632511 has 16 divisors (see below), whose sum is σ = 199701440928000. Its totient is φ = 134797350175488.

The previous prime is 166001131632499. The next prime is 166001131632527. The reversal of 166001131632511 is 115236131100661.

It is not a de Polignac number, because 166001131632511 - 2⁹ = 166001131631999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166001131632211) 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, 31103676 + ... + 36047758.

It is an arithmetic number, because the mean of its divisors is an integer number (12481340058000).

Almost surely, 2^{166001131632511} is an apocalyptic number.

166001131632511 is a deficient number, since it is larger than the sum of its proper divisors (33700309295489).

166001131632511 is a wasteful number, since it uses less digits than its factorization.

166001131632511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5196558.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 166001131632511 in words is "one hundred sixty-six trillion, one billion, one hundred thirty-one million, six hundred thirty-two thousand, five hundred eleven".