166996266763 has 4 divisors (see below), whose sum is σ = 166997153520. Its totient is φ = 166995380008.

The previous prime is 166996266751. The next prime is 166996266817. The reversal of 166996266763 is 367662699661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 166996266763 - 2¹³ = 166996258571 is a prime.

It is a super-2 number, since 2×166996266763² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166996266713) 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, 36328 + ... + 579061.

It is an arithmetic number, because the mean of its divisors is an integer number (41749288380).

Almost surely, 2^166996266763 is an apocalyptic number.

166996266763 is a deficient number, since it is larger than the sum of its proper divisors (886757).

166996266763 is an equidigital number, since it uses as much as digits as its factorization.

166996266763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886756.

The product of its digits is 158723712, while the sum is 67.

The spelling of 166996266763 in words is "one hundred sixty-six billion, nine hundred ninety-six million, two hundred sixty-six thousand, seven hundred sixty-three".