61950687593 has 2 divisors, whose sum is σ = 61950687594. Its totient is φ = 61950687592.

The previous prime is 61950687577. The next prime is 61950687599. The reversal of 61950687593 is 39578605916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40480232809 + 21470454784 = 201197^2 + 146528^2 .

It is a cyclic number.

It is not a de Polignac number, because 61950687593 - 2⁴ = 61950687577 is a prime.

It is not a weakly prime, because it can be changed into another prime (61950687599) 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, 30975343796 + 30975343797.

It is an arithmetic number, because the mean of its divisors is an integer number (30975343797).

Almost surely, 2^61950687593 is an apocalyptic number.

It is an amenable number.

61950687593 is a deficient number, since it is larger than the sum of its proper divisors (1).

61950687593 is an equidigital number, since it uses as much as digits as its factorization.

61950687593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12247200, while the sum is 59.

The spelling of 61950687593 in words is "sixty-one billion, nine hundred fifty million, six hundred eighty-seven thousand, five hundred ninety-three".