12949785451 has 8 divisors (see below), whose sum is σ = 13227301440. Its totient is φ = 12674203848.

The previous prime is 12949785449. The next prime is 12949785461. The reversal of 12949785451 is 15458794921.

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

It is a cyclic number.

It is not a de Polignac number, because 12949785451 - 2¹ = 12949785449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12949785392 and 12949785401.

It is not an unprimeable number, because it can be changed into a prime (12949785421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470061 + ... + 496846.

It is an arithmetic number, because the mean of its divisors is an integer number (1653412680).

Almost surely, 2^12949785451 is an apocalyptic number.

12949785451 is a deficient number, since it is larger than the sum of its proper divisors (277515989).

12949785451 is an equidigital number, since it uses as much as digits as its factorization.

12949785451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967193.

The product of its digits is 3628800, while the sum is 55.

The spelling of 12949785451 in words is "twelve billion, nine hundred forty-nine million, seven hundred eighty-five thousand, four hundred fifty-one".