166331263713011 has 4 divisors (see below), whose sum is σ = 166356264661152. Its totient is φ = 166306262764872.

The previous prime is 166331263712969. The next prime is 166331263713029. The reversal of 166331263713011 is 110317362133661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166331263713011 is a prime.

It is a super-2 number, since 2×166331263713011² (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 (166331263013011) 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, 12500464091 + ... + 12500477396.

It is an arithmetic number, because the mean of its divisors is an integer number (41589066165288).

Almost surely, 2^{166331263713011} is an apocalyptic number.

166331263713011 is a deficient number, since it is larger than the sum of its proper divisors (25000948141).

166331263713011 is an equidigital number, since it uses as much as digits as its factorization.

166331263713011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000948140.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 166331263713011 in words is "one hundred sixty-six trillion, three hundred thirty-one billion, two hundred sixty-three million, seven hundred thirteen thousand, eleven".