12604846981 has 4 divisors (see below), whose sum is σ = 13268260000. Its totient is φ = 11941433964.

The previous prime is 12604846949. The next prime is 12604846993. The reversal of 12604846981 is 18964840621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12604846981 - 2⁵ = 12604846949 is a prime.

It is a super-2 number, since 2×12604846981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12604846181) 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, 331706481 + ... + 331706518.

It is an arithmetic number, because the mean of its divisors is an integer number (3317065000).

Almost surely, 2^12604846981 is an apocalyptic number.

It is an amenable number.

12604846981 is a deficient number, since it is larger than the sum of its proper divisors (663413019).

12604846981 is an equidigital number, since it uses as much as digits as its factorization.

12604846981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663413018.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 12604846981 in words is "twelve billion, six hundred four million, eight hundred forty-six thousand, nine hundred eighty-one".