561745379527 has 2 divisors, whose sum is σ = 561745379528. Its totient is φ = 561745379526.

The previous prime is 561745379479. The next prime is 561745379539. The reversal of 561745379527 is 725973547165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561745379527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561745379227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280872689763 + 280872689764.

It is an arithmetic number, because the mean of its divisors is an integer number (280872689764).

Almost surely, 2^561745379527 is an apocalyptic number.

561745379527 is a deficient number, since it is larger than the sum of its proper divisors (1).

561745379527 is an equidigital number, since it uses as much as digits as its factorization.

561745379527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566000, while the sum is 61.

The spelling of 561745379527 in words is "five hundred sixty-one billion, seven hundred forty-five million, three hundred seventy-nine thousand, five hundred twenty-seven".