61531056676633 has 2 divisors, whose sum is σ = 61531056676634. Its totient is φ = 61531056676632.

The previous prime is 61531056676543. The next prime is 61531056676693. The reversal of 61531056676633 is 33667665013516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40688426047504 + 20842630629129 = 6378748^2 + 4565373^2 .

It is a cyclic number.

It is not a de Polignac number, because 61531056676633 - 2³³ = 61522466742041 is a prime.

It is not a weakly prime, because it can be changed into another prime (61531056676693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30765528338316 + 30765528338317.

It is an arithmetic number, because the mean of its divisors is an integer number (30765528338317).

Almost surely, 2^{61531056676633} is an apocalyptic number.

It is an amenable number.

61531056676633 is a deficient number, since it is larger than the sum of its proper divisors (1).

61531056676633 is an equidigital number, since it uses as much as digits as its factorization.

61531056676633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36741600, while the sum is 58.

The spelling of 61531056676633 in words is "sixty-one trillion, five hundred thirty-one billion, fifty-six million, six hundred seventy-six thousand, six hundred thirty-three".