10556821417 has 2 divisors, whose sum is σ = 10556821418. Its totient is φ = 10556821416.

The previous prime is 10556821411. The next prime is 10556821423. The reversal of 10556821417 is 71412865501.

It is a balanced prime because it is at equal distance from previous prime (10556821411) and next prime (10556821423).

It can be written as a sum of positive squares in only one way, i.e., 6412165776 + 4144655641 = 80076^2 + 64379^2 .

It is an emirp because it is prime and its reverse (71412865501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10556821417 is a prime.

It is a super-2 number, since 2×10556821417² (a number of 21 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 10556821417.

It is not a weakly prime, because it can be changed into another prime (10556821411) 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, 5278410708 + 5278410709.

It is an arithmetic number, because the mean of its divisors is an integer number (5278410709).

Almost surely, 2^10556821417 is an apocalyptic number.

It is an amenable number.

10556821417 is a deficient number, since it is larger than the sum of its proper divisors (1).

10556821417 is an equidigital number, since it uses as much as digits as its factorization.

10556821417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 10556821417 in words is "ten billion, five hundred fifty-six million, eight hundred twenty-one thousand, four hundred seventeen".