166763133903 has 4 divisors (see below), whose sum is σ = 222350845208. Its totient is φ = 111175422600.

The previous prime is 166763133881. The next prime is 166763133907. The reversal of 166763133903 is 309331367661.

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

It is not a de Polignac number, because 166763133903 - 2¹⁴ = 166763117519 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 (166763133907) 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, 27793855648 + ... + 27793855653.

It is an arithmetic number, because the mean of its divisors is an integer number (55587711302).

Almost surely, 2^166763133903 is an apocalyptic number.

166763133903 is a deficient number, since it is larger than the sum of its proper divisors (55587711305).

166763133903 is an equidigital number, since it uses as much as digits as its factorization.

166763133903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55587711304.

The product of its (nonzero) digits is 1102248, while the sum is 48.

The spelling of 166763133903 in words is "one hundred sixty-six billion, seven hundred sixty-three million, one hundred thirty-three thousand, nine hundred three".