61368983413 has 2 divisors, whose sum is σ = 61368983414. Its totient is φ = 61368983412.

The previous prime is 61368983369. The next prime is 61368983471. The reversal of 61368983413 is 31438986316.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41256921924 + 20112061489 = 203118^2 + 141817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61368983413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61368903413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30684491706 + 30684491707.

It is an arithmetic number, because the mean of its divisors is an integer number (30684491707).

Almost surely, 2^61368983413 is an apocalyptic number.

It is an amenable number.

61368983413 is a deficient number, since it is larger than the sum of its proper divisors (1).

61368983413 is an equidigital number, since it uses as much as digits as its factorization.

61368983413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 52.

The spelling of 61368983413 in words is "sixty-one billion, three hundred sixty-eight million, nine hundred eighty-three thousand, four hundred thirteen".