61055556059 has 2 divisors, whose sum is σ = 61055556060. Its totient is φ = 61055556058.

The previous prime is 61055556043. The next prime is 61055556097. The reversal of 61055556059 is 95065555016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61055556059 - 2⁴ = 61055556043 is a prime.

It is a super-2 number, since 2×61055556059² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (61055546059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30527778029 + 30527778030.

It is an arithmetic number, because the mean of its divisors is an integer number (30527778030).

Almost surely, 2^61055556059 is an apocalyptic number.

61055556059 is a deficient number, since it is larger than the sum of its proper divisors (1).

61055556059 is an equidigital number, since it uses as much as digits as its factorization.

61055556059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1012500, while the sum is 47.

The spelling of 61055556059 in words is "sixty-one billion, fifty-five million, five hundred fifty-six thousand, fifty-nine".