55069041691 has 2 divisors, whose sum is σ = 55069041692. Its totient is φ = 55069041690.

The previous prime is 55069041673. The next prime is 55069041721. The reversal of 55069041691 is 19614096055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55069041691 - 2¹¹ = 55069039643 is a prime.

It is a super-2 number, since 2×55069041691² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55069041661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27534520845 + 27534520846.

It is an arithmetic number, because the mean of its divisors is an integer number (27534520846).

Almost surely, 2^55069041691 is an apocalyptic number.

55069041691 is a deficient number, since it is larger than the sum of its proper divisors (1).

55069041691 is an equidigital number, since it uses as much as digits as its factorization.

55069041691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 55069041691 in words is "fifty-five billion, sixty-nine million, forty-one thousand, six hundred ninety-one".