12563383945 has 16 divisors (see below), whose sum is σ = 18243301248. Its totient is φ = 8108133120.

The previous prime is 12563383939. The next prime is 12563383951. The reversal of 12563383945 is 54938336521.

It is an interprime number because it is at equal distance from previous prime (12563383939) and next prime (12563383951).

It is not a de Polignac number, because 12563383945 - 2¹³ = 12563375753 is a prime.

It is a super-2 number, since 2×12563383945² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10556871 + ... + 10558060.

It is an arithmetic number, because the mean of its divisors is an integer number (1140206328).

Almost surely, 2^12563383945 is an apocalyptic number.

It is an amenable number.

12563383945 is a deficient number, since it is larger than the sum of its proper divisors (5679917303).

12563383945 is a wasteful number, since it uses less digits than its factorization.

12563383945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21114960.

The product of its digits is 2332800, while the sum is 49.

The spelling of 12563383945 in words is "twelve billion, five hundred sixty-three million, three hundred eighty-three thousand, nine hundred forty-five".