30561426013 has 2 divisors, whose sum is σ = 30561426014. Its totient is φ = 30561426012.

The previous prime is 30561425977. The next prime is 30561426023. The reversal of 30561426013 is 31062416503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30545601529 + 15824484 = 174773^2 + 3978^2 .

It is a cyclic number.

It is not a de Polignac number, because 30561426013 - 2²¹ = 30559328861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30561426023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15280713006 + 15280713007.

It is an arithmetic number, because the mean of its divisors is an integer number (15280713007).

Almost surely, 2^30561426013 is an apocalyptic number.

It is an amenable number.

30561426013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30561426013 is an equidigital number, since it uses as much as digits as its factorization.

30561426013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 30561426013 in words is "thirty billion, five hundred sixty-one million, four hundred twenty-six thousand, thirteen".