12238863556 has 6 divisors (see below), whose sum is σ = 21418011230. Its totient is φ = 6119431776.

The previous prime is 12238863541. The next prime is 12238863557. The reversal of 12238863556 is 65536883221.

It can be written as a sum of positive squares in only one way, i.e., 8100000000 + 4138863556 = 90000^2 + 64334^2 .

It is a super-2 number, since 2×12238863556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12238863557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1529857941 + ... + 1529857948.

Almost surely, 2^12238863556 is an apocalyptic number.

It is an amenable number.

12238863556 is a deficient number, since it is larger than the sum of its proper divisors (9179147674).

12238863556 is a wasteful number, since it uses less digits than its factorization.

12238863556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059715893 (or 3059715891 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The spelling of 12238863556 in words is "twelve billion, two hundred thirty-eight million, eight hundred sixty-three thousand, five hundred fifty-six".