10521535867 has 2 divisors, whose sum is σ = 10521535868. Its totient is φ = 10521535866.

The previous prime is 10521535831. The next prime is 10521535879. The reversal of 10521535867 is 76853512501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10521535867 is a prime.

It is a super-2 number, since 2×10521535867² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10521535967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260767933 + 5260767934.

It is an arithmetic number, because the mean of its divisors is an integer number (5260767934).

Almost surely, 2^10521535867 is an apocalyptic number.

10521535867 is a deficient number, since it is larger than the sum of its proper divisors (1).

10521535867 is an equidigital number, since it uses as much as digits as its factorization.

10521535867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 10521535867 in words is "ten billion, five hundred twenty-one million, five hundred thirty-five thousand, eight hundred sixty-seven".