12990601633 has 2 divisors, whose sum is σ = 12990601634. Its totient is φ = 12990601632.

The previous prime is 12990601609. The next prime is 12990601693. The reversal of 12990601633 is 33610609921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8769760609 + 4220841024 = 93647^2 + 64968^2 .

It is a cyclic number.

It is not a de Polignac number, because 12990601633 - 2⁵ = 12990601601 is a prime.

It is not a weakly prime, because it can be changed into another prime (12990601693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6495300816 + 6495300817.

It is an arithmetic number, because the mean of its divisors is an integer number (6495300817).

Almost surely, 2^12990601633 is an apocalyptic number.

It is an amenable number.

12990601633 is a deficient number, since it is larger than the sum of its proper divisors (1).

12990601633 is an equidigital number, since it uses as much as digits as its factorization.

12990601633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 12990601633 in words is "twelve billion, nine hundred ninety million, six hundred one thousand, six hundred thirty-three".