561029780533 has 2 divisors, whose sum is σ = 561029780534. Its totient is φ = 561029780532.

The previous prime is 561029780501. The next prime is 561029780543. The reversal of 561029780533 is 335087920165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312125577124 + 248904203409 = 558682^2 + 498903^2 .

It is a cyclic number.

It is not a de Polignac number, because 561029780533 - 2⁵ = 561029780501 is a prime.

It is a super-2 number, since 2×561029780533² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561029780543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280514890266 + 280514890267.

It is an arithmetic number, because the mean of its divisors is an integer number (280514890267).

Almost surely, 2^561029780533 is an apocalyptic number.

It is an amenable number.

561029780533 is a deficient number, since it is larger than the sum of its proper divisors (1).

561029780533 is an equidigital number, since it uses as much as digits as its factorization.

561029780533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 561029780533 in words is "five hundred sixty-one billion, twenty-nine million, seven hundred eighty thousand, five hundred thirty-three".