12461493986 has 8 divisors (see below), whose sum is σ = 19791784620. Its totient is φ = 5864232448.

The previous prime is 12461493983. The next prime is 12461494013. The reversal of 12461493986 is 68939416421.

It can be written as a sum of positive squares in 2 ways, for example, as 9622629025 + 2838864961 = 98095^2 + 53281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12461493986² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12461493983) 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, 183257231 + ... + 183257298.

Almost surely, 2^12461493986 is an apocalyptic number.

12461493986 is a deficient number, since it is larger than the sum of its proper divisors (7330290634).

12461493986 is a wasteful number, since it uses less digits than its factorization.

12461493986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366514548.

The product of its digits is 2239488, while the sum is 53.

The spelling of 12461493986 in words is "twelve billion, four hundred sixty-one million, four hundred ninety-three thousand, nine hundred eighty-six".