12491946202 has 4 divisors (see below), whose sum is σ = 18737919306. Its totient is φ = 6245973100.

The previous prime is 12491946197. The next prime is 12491946221. The reversal of 12491946202 is 20264919421.

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

It can be written as a sum of positive squares in only one way, i.e., 10120158801 + 2371787401 = 100599^2 + 48701^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3122986549 + ... + 3122986552.

Almost surely, 2^12491946202 is an apocalyptic number.

12491946202 is a deficient number, since it is larger than the sum of its proper divisors (6245973104).

12491946202 is an equidigital number, since it uses as much as digits as its factorization.

12491946202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245973103.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 12491946202 in words is "twelve billion, four hundred ninety-one million, nine hundred forty-six thousand, two hundred two".