10561152521 has 2 divisors, whose sum is σ = 10561152522. Its totient is φ = 10561152520.

The previous prime is 10561152449. The next prime is 10561152577. The reversal of 10561152521 is 12525116501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10432579600 + 128572921 = 102140^2 + 11339^2 .

It is a cyclic number.

It is not a de Polignac number, because 10561152521 - 2¹⁸ = 10560890377 is a prime.

It is a super-2 number, since 2×10561152521² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10561152821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280576260 + 5280576261.

It is an arithmetic number, because the mean of its divisors is an integer number (5280576261).

Almost surely, 2^10561152521 is an apocalyptic number.

It is an amenable number.

10561152521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10561152521 is an equidigital number, since it uses as much as digits as its factorization.

10561152521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 29.

The spelling of 10561152521 in words is "ten billion, five hundred sixty-one million, one hundred fifty-two thousand, five hundred twenty-one".