10408813561 has 2 divisors, whose sum is σ = 10408813562. Its totient is φ = 10408813560.

The previous prime is 10408813559. The next prime is 10408813621. The reversal of 10408813561 is 16531880401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9643240000 + 765573561 = 98200^2 + 27669^2 .

It is a cyclic number.

It is not a de Polignac number, because 10408813561 - 2¹ = 10408813559 is a prime.

Together with 10408813559, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10408813561.

It is not a weakly prime, because it can be changed into another prime (10408813501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5204406780 + 5204406781.

It is an arithmetic number, because the mean of its divisors is an integer number (5204406781).

Almost surely, 2^10408813561 is an apocalyptic number.

It is an amenable number.

10408813561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10408813561 is an equidigital number, since it uses as much as digits as its factorization.

10408813561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

It can be divided in two parts, 104088 and 13561, that added together give a 6-th power (117649 = 7⁶).

The spelling of 10408813561 in words is "ten billion, four hundred eight million, eight hundred thirteen thousand, five hundred sixty-one".