13061828921 has 2 divisors, whose sum is σ = 13061828922. Its totient is φ = 13061828920.

The previous prime is 13061828903. The next prime is 13061828993. The reversal of 13061828921 is 12982816031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7280355625 + 5781473296 = 85325^2 + 76036^2 .

It is a cyclic number.

It is not a de Polignac number, because 13061828921 - 2¹⁴ = 13061812537 is a prime.

It is a super-2 number, since 2×13061828921² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13061827921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6530914460 + 6530914461.

It is an arithmetic number, because the mean of its divisors is an integer number (6530914461).

Almost surely, 2^13061828921 is an apocalyptic number.

It is an amenable number.

13061828921 is a deficient number, since it is larger than the sum of its proper divisors (1).

13061828921 is an equidigital number, since it uses as much as digits as its factorization.

13061828921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 13061828921 in words is "thirteen billion, sixty-one million, eight hundred twenty-eight thousand, nine hundred twenty-one".