561912153667 has 2 divisors, whose sum is σ = 561912153668. Its totient is φ = 561912153666.

The previous prime is 561912153661. The next prime is 561912153749. The reversal of 561912153667 is 766351219165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561912153667 - 2³ = 561912153659 is a prime.

It is not a weakly prime, because it can be changed into another prime (561912153661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280956076833 + 280956076834.

It is an arithmetic number, because the mean of its divisors is an integer number (280956076834).

Almost surely, 2^561912153667 is an apocalyptic number.

561912153667 is a deficient number, since it is larger than the sum of its proper divisors (1).

561912153667 is an equidigital number, since it uses as much as digits as its factorization.

561912153667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The spelling of 561912153667 in words is "five hundred sixty-one billion, nine hundred twelve million, one hundred fifty-three thousand, six hundred sixty-seven".