10545632821 has 2 divisors, whose sum is σ = 10545632822. Its totient is φ = 10545632820.

The previous prime is 10545632809. The next prime is 10545632827. The reversal of 10545632821 is 12823654501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6534943921 + 4010688900 = 80839^2 + 63330^2 .

It is a cyclic number.

It is not a de Polignac number, because 10545632821 - 2¹⁹ = 10545108533 is a prime.

It is a super-2 number, since 2×10545632821² (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 (10545632827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5272816410 + 5272816411.

It is an arithmetic number, because the mean of its divisors is an integer number (5272816411).

Almost surely, 2^10545632821 is an apocalyptic number.

It is an amenable number.

10545632821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10545632821 is an equidigital number, since it uses as much as digits as its factorization.

10545632821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 10545632821 in words is "ten billion, five hundred forty-five million, six hundred thirty-two thousand, eight hundred twenty-one".