55611311311669 has 2 divisors, whose sum is σ = 55611311311670. Its totient is φ = 55611311311668.

The previous prime is 55611311311651. The next prime is 55611311311681. The reversal of 55611311311669 is 96611311311655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35708452679025 + 19902858632644 = 5975655^2 + 4461262^2 .

It is a cyclic number.

It is not a de Polignac number, because 55611311311669 - 2⁴³ = 46815218289461 is a prime.

It is a super-2 number, since 2×55611311311669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55611311311769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805655655834 + 27805655655835.

It is an arithmetic number, because the mean of its divisors is an integer number (27805655655835).

Almost surely, 2^{55611311311669} is an apocalyptic number.

It is an amenable number.

55611311311669 is a deficient number, since it is larger than the sum of its proper divisors (1).

55611311311669 is an equidigital number, since it uses as much as digits as its factorization.

55611311311669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 49.

The spelling of 55611311311669 in words is "fifty-five trillion, six hundred eleven billion, three hundred eleven million, three hundred eleven thousand, six hundred sixty-nine".