61663515627127 has 2 divisors, whose sum is σ = 61663515627128. Its totient is φ = 61663515627126.

The previous prime is 61663515627113. The next prime is 61663515627163. The reversal of 61663515627127 is 72172651536616.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61663515627127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61663515637127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30831757813563 + 30831757813564.

It is an arithmetic number, because the mean of its divisors is an integer number (30831757813564).

Almost surely, 2^{61663515627127} is an apocalyptic number.

61663515627127 is a deficient number, since it is larger than the sum of its proper divisors (1).

61663515627127 is an equidigital number, since it uses as much as digits as its factorization.

61663515627127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 58.

The spelling of 61663515627127 in words is "sixty-one trillion, six hundred sixty-three billion, five hundred fifteen million, six hundred twenty-seven thousand, one hundred twenty-seven".