61219625479 has 2 divisors, whose sum is σ = 61219625480. Its totient is φ = 61219625478.

The previous prime is 61219625459. The next prime is 61219625483. The reversal of 61219625479 is 97452691216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61219625479 - 2⁵ = 61219625447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61219625449) 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, 30609812739 + 30609812740.

It is an arithmetic number, because the mean of its divisors is an integer number (30609812740).

Almost surely, 2^61219625479 is an apocalyptic number.

61219625479 is a deficient number, since it is larger than the sum of its proper divisors (1).

61219625479 is an equidigital number, since it uses as much as digits as its factorization.

61219625479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The spelling of 61219625479 in words is "sixty-one billion, two hundred nineteen million, six hundred twenty-five thousand, four hundred seventy-nine".