61452251640133 has 2 divisors, whose sum is σ = 61452251640134. Its totient is φ = 61452251640132.

The previous prime is 61452251640127. The next prime is 61452251640211. The reversal of 61452251640133 is 33104615225416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61187954886529 + 264296753604 = 7822273^2 + 514098^2 .

It is a cyclic number.

It is not a de Polignac number, because 61452251640133 - 2⁹ = 61452251639621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61452251640133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61452251640233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30726125820066 + 30726125820067.

It is an arithmetic number, because the mean of its divisors is an integer number (30726125820067).

Almost surely, 2^{61452251640133} is an apocalyptic number.

It is an amenable number.

61452251640133 is a deficient number, since it is larger than the sum of its proper divisors (1).

61452251640133 is an equidigital number, since it uses as much as digits as its factorization.

61452251640133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 61452251640133 its reverse (33104615225416), we get a palindrome (94556866865549).

The spelling of 61452251640133 in words is "sixty-one trillion, four hundred fifty-two billion, two hundred fifty-one million, six hundred forty thousand, one hundred thirty-three".