61368255526393 has 2 divisors, whose sum is σ = 61368255526394. Its totient is φ = 61368255526392.

The previous prime is 61368255526373. The next prime is 61368255526397. The reversal of 61368255526393 is 39362555286316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58685221354384 + 2683034172009 = 7660628^2 + 1637997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61368255526393 is a prime.

It is not a weakly prime, because it can be changed into another prime (61368255526397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30684127763196 + 30684127763197.

It is an arithmetic number, because the mean of its divisors is an integer number (30684127763197).

Almost surely, 2^{61368255526393} is an apocalyptic number.

It is an amenable number.

61368255526393 is a deficient number, since it is larger than the sum of its proper divisors (1).

61368255526393 is an equidigital number, since it uses as much as digits as its factorization.

61368255526393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952000, while the sum is 64.

The spelling of 61368255526393 in words is "sixty-one trillion, three hundred sixty-eight billion, two hundred fifty-five million, five hundred twenty-six thousand, three hundred ninety-three".