61635676117 has 2 divisors, whose sum is σ = 61635676118. Its totient is φ = 61635676116.

The previous prime is 61635676103. The next prime is 61635676133. The reversal of 61635676117 is 71167653616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43827841201 + 17807834916 = 209351^2 + 133446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61635676117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61635671117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30817838058 + 30817838059.

It is an arithmetic number, because the mean of its divisors is an integer number (30817838059).

Almost surely, 2^61635676117 is an apocalyptic number.

It is an amenable number.

61635676117 is a deficient number, since it is larger than the sum of its proper divisors (1).

61635676117 is an equidigital number, since it uses as much as digits as its factorization.

61635676117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The spelling of 61635676117 in words is "sixty-one billion, six hundred thirty-five million, six hundred seventy-six thousand, one hundred seventeen".