10401556489 has 2 divisors, whose sum is σ = 10401556490. Its totient is φ = 10401556488.

The previous prime is 10401556447. The next prime is 10401556507. The reversal of 10401556489 is 98465510401.

10401556489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5991534025 + 4410022464 = 77405^2 + 66408^2 .

It is a cyclic number.

It is not a de Polignac number, because 10401556489 - 2¹⁵ = 10401523721 is a prime.

It is not a weakly prime, because it can be changed into another prime (10401556889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200778244 + 5200778245.

It is an arithmetic number, because the mean of its divisors is an integer number (5200778245).

Almost surely, 2^10401556489 is an apocalyptic number.

It is an amenable number.

10401556489 is a deficient number, since it is larger than the sum of its proper divisors (1).

10401556489 is an equidigital number, since it uses as much as digits as its factorization.

10401556489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 10401556489 in words is "ten billion, four hundred one million, five hundred fifty-six thousand, four hundred eighty-nine".