55995810697 has 2 divisors, whose sum is σ = 55995810698. Its totient is φ = 55995810696.

The previous prime is 55995810671. The next prime is 55995810733. The reversal of 55995810697 is 79601859955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54290864016 + 1704946681 = 233004^2 + 41291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55995810697 is a prime.

It is a super-2 number, since 2×55995810697² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55995819697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27997905348 + 27997905349.

It is an arithmetic number, because the mean of its divisors is an integer number (27997905349).

Almost surely, 2^55995810697 is an apocalyptic number.

It is an amenable number.

55995810697 is a deficient number, since it is larger than the sum of its proper divisors (1).

55995810697 is an equidigital number, since it uses as much as digits as its factorization.

55995810697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618000, while the sum is 64.

The spelling of 55995810697 in words is "fifty-five billion, nine hundred ninety-five million, eight hundred ten thousand, six hundred ninety-seven".