126182991163 has 4 divisors (see below), whose sum is σ = 127483846840. Its totient is φ = 124882135488.

The previous prime is 126182991157. The next prime is 126182991169. The reversal of 126182991163 is 361199281621.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (126182991157) and next prime (126182991169).

It is a cyclic number.

It is not a de Polignac number, because 126182991163 - 2¹⁷ = 126182860091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126182991169) 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, 650427693 + ... + 650427886.

It is an arithmetic number, because the mean of its divisors is an integer number (31870961710).

Almost surely, 2^126182991163 is an apocalyptic number.

126182991163 is a deficient number, since it is larger than the sum of its proper divisors (1300855677).

126182991163 is an equidigital number, since it uses as much as digits as its factorization.

126182991163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300855676.

The product of its digits is 279936, while the sum is 49.

The spelling of 126182991163 in words is "one hundred twenty-six billion, one hundred eighty-two million, nine hundred ninety-one thousand, one hundred sixty-three".