12651696553 has 2 divisors, whose sum is σ = 12651696554. Its totient is φ = 12651696552.

The previous prime is 12651696527. The next prime is 12651696569. The reversal of 12651696553 is 35569615621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11306494224 + 1345202329 = 106332^2 + 36677^2 .

It is a cyclic number.

It is not a de Polignac number, because 12651696553 - 2³³ = 4061761961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12651696497 and 12651696506.

It is not a weakly prime, because it can be changed into another prime (12651696583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325848276 + 6325848277.

It is an arithmetic number, because the mean of its divisors is an integer number (6325848277).

Almost surely, 2^12651696553 is an apocalyptic number.

It is an amenable number.

12651696553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651696553 is an equidigital number, since it uses as much as digits as its factorization.

12651696553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 49.

It can be divided in two parts, 12651696 and 553, that added together give a square (12652249 = 3557²).

The spelling of 12651696553 in words is "twelve billion, six hundred fifty-one million, six hundred ninety-six thousand, five hundred fifty-three".