104507661493 has 2 divisors, whose sum is σ = 104507661494. Its totient is φ = 104507661492.

The previous prime is 104507661439. The next prime is 104507661527. The reversal of 104507661493 is 394166705401.

Together with previous prime (104507661439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102234946564 + 2272714929 = 319742^2 + 47673^2 .

It is a cyclic number.

It is not a de Polignac number, because 104507661493 - 2²⁵ = 104474107061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104507661793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52253830746 + 52253830747.

It is an arithmetic number, because the mean of its divisors is an integer number (52253830747).

Almost surely, 2^104507661493 is an apocalyptic number.

It is an amenable number.

104507661493 is a deficient number, since it is larger than the sum of its proper divisors (1).

104507661493 is an equidigital number, since it uses as much as digits as its factorization.

104507661493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 104507661493 in words is "one hundred four billion, five hundred seven million, six hundred sixty-one thousand, four hundred ninety-three".