5971555669 has 2 divisors, whose sum is σ = 5971555670. Its totient is φ = 5971555668.

The previous prime is 5971555651. The next prime is 5971555673. The reversal of 5971555669 is 9665551795.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5074852644 + 896703025 = 71238^2 + 29945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5971555669 is a prime.

It is a super-2 number, since 2×5971555669² = 71318954215932075122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5971555069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2985777834 + 2985777835.

It is an arithmetic number, because the mean of its divisors is an integer number (2985777835).

Almost surely, 2^5971555669 is an apocalyptic number.

It is an amenable number.

5971555669 is a deficient number, since it is larger than the sum of its proper divisors (1).

5971555669 is an equidigital number, since it uses as much as digits as its factorization.

5971555669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12757500, while the sum is 58.

The square root of 5971555669 is about 77275.8414318472. The cubic root of 5971555669 is about 1814.2445554456.

The spelling of 5971555669 in words is "five billion, nine hundred seventy-one million, five hundred fifty-five thousand, six hundred sixty-nine".