61460186278559 has 2 divisors, whose sum is σ = 61460186278560. Its totient is φ = 61460186278558.

The previous prime is 61460186278549. The next prime is 61460186278657. The reversal of 61460186278559 is 95587268106416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61460186278559 - 2³² = 61455891311263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61460186278549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30730093139279 + 30730093139280.

It is an arithmetic number, because the mean of its divisors is an integer number (30730093139280).

Almost surely, 2^{61460186278559} is an apocalyptic number.

61460186278559 is a deficient number, since it is larger than the sum of its proper divisors (1).

61460186278559 is an equidigital number, since it uses as much as digits as its factorization.

61460186278559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174182400, while the sum is 68.

The spelling of 61460186278559 in words is "sixty-one trillion, four hundred sixty billion, one hundred eighty-six million, two hundred seventy-eight thousand, five hundred fifty-nine".