1305604624649 has 32 divisors (see below), whose sum is σ = 1516067314944. Its totient is φ = 1114735944960.

The previous prime is 1305604624619. The next prime is 1305604624657. The reversal of 1305604624649 is 9464264065031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305604624649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1305604624597 and 1305604624606.

It is not an unprimeable number, because it can be changed into a prime (1305604624619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1441259 + ... + 2165279.

It is an arithmetic number, because the mean of its divisors is an integer number (47377103592).

Almost surely, 2^{1305604624649} is an apocalyptic number.

It is an amenable number.

1305604624649 is a deficient number, since it is larger than the sum of its proper divisors (210462690295).

1305604624649 is a wasteful number, since it uses less digits than its factorization.

1305604624649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724257.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 1305604624649 in words is "one trillion, three hundred five billion, six hundred four million, six hundred twenty-four thousand, six hundred forty-nine".