10555536421 has 2 divisors, whose sum is σ = 10555536422. Its totient is φ = 10555536420.

The previous prime is 10555536269. The next prime is 10555536457. The reversal of 10555536421 is 12463555501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10499076225 + 56460196 = 102465^2 + 7514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10555536421 is a prime.

It is a super-2 number, since 2×10555536421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10555516421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277768210 + 5277768211.

It is an arithmetic number, because the mean of its divisors is an integer number (5277768211).

Almost surely, 2^10555536421 is an apocalyptic number.

It is an amenable number.

10555536421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10555536421 is an equidigital number, since it uses as much as digits as its factorization.

10555536421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 10555536421 in words is "ten billion, five hundred fifty-five million, five hundred thirty-six thousand, four hundred twenty-one".