376642845569 has 2 divisors, whose sum is σ = 376642845570. Its totient is φ = 376642845568.

The previous prime is 376642845533. The next prime is 376642845571. The reversal of 376642845569 is 965548246673.

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., 234559081969 + 142083763600 = 484313^2 + 376940^2 .

It is a cyclic number.

It is not a de Polignac number, because 376642845569 - 2¹² = 376642841473 is a prime.

It is a super-2 number, since 2×376642845569² (a number of 24 digits) contains 22 as substring.

Together with 376642845571, 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 (376642845529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188321422784 + 188321422785.

It is an arithmetic number, because the mean of its divisors is an integer number (188321422785).

Almost surely, 2^376642845569 is an apocalyptic number.

It is an amenable number.

376642845569 is a deficient number, since it is larger than the sum of its proper divisors (1).

376642845569 is an equidigital number, since it uses as much as digits as its factorization.

376642845569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 261273600, while the sum is 65.

The spelling of 376642845569 in words is "three hundred seventy-six billion, six hundred forty-two million, eight hundred forty-five thousand, five hundred sixty-nine".