12452979903647 has 4 divisors (see below), whose sum is σ = 12452994952416. Its totient is φ = 12452964854880.

The previous prime is 12452979903643. The next prime is 12452979903649. The reversal of 12452979903647 is 74630997925421.

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

It is a cyclic number.

It is not a de Polignac number, because 12452979903647 - 2² = 12452979903643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12452979903643) 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, 6206138 + ... + 7963799.

It is an arithmetic number, because the mean of its divisors is an integer number (3113248738104).

Almost surely, 2^{12452979903647} is an apocalyptic number.

12452979903647 is a deficient number, since it is larger than the sum of its proper divisors (15048769).

12452979903647 is an equidigital number, since it uses as much as digits as its factorization.

12452979903647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15048768.

The product of its (nonzero) digits is 205752960, while the sum is 68.

The spelling of 12452979903647 in words is "twelve trillion, four hundred fifty-two billion, nine hundred seventy-nine million, nine hundred three thousand, six hundred forty-seven".