12520017616936 has 8 divisors (see below), whose sum is σ = 23475033031770. Its totient is φ = 6260008808464.

The previous prime is 12520017616871. The next prime is 12520017616949. The reversal of 12520017616936 is 63961671002521.

It can be written as a sum of positive squares in only one way, i.e., 7190817664900 + 5329199952036 = 2681570^2 + 2308506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12520017616936² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12520017616936.

It is an unprimeable number.

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, 782501101051 + ... + 782501101066.

Almost surely, 2^{12520017616936} is an apocalyptic number.

It is an amenable number.

12520017616936 is a deficient number, since it is larger than the sum of its proper divisors (10955015414834).

12520017616936 is a wasteful number, since it uses less digits than its factorization.

12520017616936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565002202123 (or 1565002202119 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 12520017616936 in words is "twelve trillion, five hundred twenty billion, seventeen million, six hundred sixteen thousand, nine hundred thirty-six".