561016510511 has 2 divisors, whose sum is σ = 561016510512. Its totient is φ = 561016510510.

The previous prime is 561016510493. The next prime is 561016510559. The reversal of 561016510511 is 115015610165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561016510511 - 2¹⁸ = 561016248367 is a prime.

It is a super-2 number, since 2×561016510511² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561016510711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280508255255 + 280508255256.

It is an arithmetic number, because the mean of its divisors is an integer number (280508255256).

Almost surely, 2^561016510511 is an apocalyptic number.

561016510511 is a deficient number, since it is larger than the sum of its proper divisors (1).

561016510511 is an equidigital number, since it uses as much as digits as its factorization.

561016510511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 561016510511 in words is "five hundred sixty-one billion, sixteen million, five hundred ten thousand, five hundred eleven".