2061664330567 has 2 divisors, whose sum is σ = 2061664330568. Its totient is φ = 2061664330566.

The previous prime is 2061664330541. The next prime is 2061664330591. The reversal of 2061664330567 is 7650334661602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2061664330567 - 2²⁷ = 2061530112839 is a prime.

It is a super-3 number, since 3×2061664330567³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2061664330567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061664330067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030832165283 + 1030832165284.

It is an arithmetic number, because the mean of its divisors is an integer number (1030832165284).

Almost surely, 2^{2061664330567} is an apocalyptic number.

2061664330567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061664330567 is an equidigital number, since it uses as much as digits as its factorization.

2061664330567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 2061664330567 in words is "two trillion, sixty-one billion, six hundred sixty-four million, three hundred thirty thousand, five hundred sixty-seven".