61696265489 has 2 divisors, whose sum is σ = 61696265490. Its totient is φ = 61696265488.

The previous prime is 61696265471. The next prime is 61696265497. The reversal of 61696265489 is 98456269616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61662822400 + 33443089 = 248320^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 61696265489 - 2³² = 57401298193 is a prime.

It is not a weakly prime, because it can be changed into another prime (61696265419) 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, 30848132744 + 30848132745.

It is an arithmetic number, because the mean of its divisors is an integer number (30848132745).

Almost surely, 2^61696265489 is an apocalyptic number.

It is an amenable number.

61696265489 is a deficient number, since it is larger than the sum of its proper divisors (1).

61696265489 is an equidigital number, since it uses as much as digits as its factorization.

61696265489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33592320, while the sum is 62.

The spelling of 61696265489 in words is "sixty-one billion, six hundred ninety-six million, two hundred sixty-five thousand, four hundred eighty-nine".