61630025593 has 2 divisors, whose sum is σ = 61630025594. Its totient is φ = 61630025592.

The previous prime is 61630025549. The next prime is 61630025623. The reversal of 61630025593 is 39552003616.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42145215849 + 19484809744 = 205293^2 + 139588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61630025593 is a prime.

It is not a weakly prime, because it can be changed into another prime (61630025993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30815012796 + 30815012797.

It is an arithmetic number, because the mean of its divisors is an integer number (30815012797).

Almost surely, 2^61630025593 is an apocalyptic number.

It is an amenable number.

61630025593 is a deficient number, since it is larger than the sum of its proper divisors (1).

61630025593 is an equidigital number, since it uses as much as digits as its factorization.

61630025593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 61630025593 in words is "sixty-one billion, six hundred thirty million, twenty-five thousand, five hundred ninety-three".