12550533158 has 4 divisors (see below), whose sum is σ = 18825799740. Its totient is φ = 6275266578.

The previous prime is 12550533157. The next prime is 12550533161. The reversal of 12550533158 is 85133505521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85133505521 = 53 ⋅1606292557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550533157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3137633288 + ... + 3137633291.

It is an arithmetic number, because the mean of its divisors is an integer number (4706449935).

Almost surely, 2^12550533158 is an apocalyptic number.

12550533158 is a deficient number, since it is larger than the sum of its proper divisors (6275266582).

12550533158 is an equidigital number, since it uses as much as digits as its factorization.

12550533158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275266581.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 12550533158 in words is "twelve billion, five hundred fifty million, five hundred thirty-three thousand, one hundred fifty-eight".