12735824858 has 4 divisors (see below), whose sum is σ = 19103737290. Its totient is φ = 6367912428.

The previous prime is 12735824833. The next prime is 12735824863. The reversal of 12735824858 is 85842853721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85842853721 = 3137 ⋅27364633.

It can be written as a sum of positive squares in only one way, i.e., 11875986529 + 859838329 = 108977^2 + 29323^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3183956213 + ... + 3183956216.

Almost surely, 2^12735824858 is an apocalyptic number.

12735824858 is a deficient number, since it is larger than the sum of its proper divisors (6367912432).

12735824858 is an equidigital number, since it uses as much as digits as its factorization.

12735824858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367912431.

The product of its digits is 4300800, while the sum is 53.

The spelling of 12735824858 in words is "twelve billion, seven hundred thirty-five million, eight hundred twenty-four thousand, eight hundred fifty-eight".