61413566453 has 2 divisors, whose sum is σ = 61413566454. Its totient is φ = 61413566452.

The previous prime is 61413566353. The next prime is 61413566491. The reversal of 61413566453 is 35466531416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35491922449 + 25921644004 = 188393^2 + 161002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61413566453 is a prime.

It is a super-2 number, since 2×61413566453² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61413566353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30706783226 + 30706783227.

It is an arithmetic number, because the mean of its divisors is an integer number (30706783227).

Almost surely, 2^61413566453 is an apocalyptic number.

It is an amenable number.

61413566453 is a deficient number, since it is larger than the sum of its proper divisors (1).

61413566453 is an equidigital number, since it uses as much as digits as its factorization.

61413566453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 44.

The spelling of 61413566453 in words is "sixty-one billion, four hundred thirteen million, five hundred sixty-six thousand, four hundred fifty-three".