566981619401 has 2 divisors, whose sum is σ = 566981619402. Its totient is φ = 566981619400.

The previous prime is 566981619341. The next prime is 566981619403. The reversal of 566981619401 is 104916189665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434150527801 + 132831091600 = 658901^2 + 364460^2 .

It is a cyclic number.

It is not a de Polignac number, because 566981619401 - 2²⁶ = 566914510537 is a prime.

It is a super-5 number, since 5×566981619401⁵ (a number of 60 digits) contains 55555 as substring.

Together with 566981619403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (566981619403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283490809700 + 283490809701.

It is an arithmetic number, because the mean of its divisors is an integer number (283490809701).

Almost surely, 2^566981619401 is an apocalyptic number.

It is an amenable number.

566981619401 is a deficient number, since it is larger than the sum of its proper divisors (1).

566981619401 is an equidigital number, since it uses as much as digits as its factorization.

566981619401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 566981619401 in words is "five hundred sixty-six billion, nine hundred eighty-one million, six hundred nineteen thousand, four hundred one".