61516588027 has 2 divisors, whose sum is σ = 61516588028. Its totient is φ = 61516588026.

The previous prime is 61516588009. The next prime is 61516588031. The reversal of 61516588027 is 72088561516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61516588027 is a prime.

It is not a weakly prime, because it can be changed into another prime (61516588057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30758294013 + 30758294014.

It is an arithmetic number, because the mean of its divisors is an integer number (30758294014).

Almost surely, 2^61516588027 is an apocalyptic number.

61516588027 is a deficient number, since it is larger than the sum of its proper divisors (1).

61516588027 is an equidigital number, since it uses as much as digits as its factorization.

61516588027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 61516588027 in words is "sixty-one billion, five hundred sixteen million, five hundred eighty-eight thousand, twenty-seven".