5751216898561 has 2 divisors, whose sum is σ = 5751216898562. Its totient is φ = 5751216898560.

The previous prime is 5751216898549. The next prime is 5751216898571. The reversal of 5751216898561 is 1658986121575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5636350810000 + 114866088561 = 2374100^2 + 338919^2 .

It is a cyclic number.

It is not a de Polignac number, because 5751216898561 - 2⁷ = 5751216898433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5751216898493 and 5751216898502.

It is not a weakly prime, because it can be changed into another prime (5751216898571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2875608449280 + 2875608449281.

It is an arithmetic number, because the mean of its divisors is an integer number (2875608449281).

Almost surely, 2^{5751216898561} is an apocalyptic number.

It is an amenable number.

5751216898561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5751216898561 is an equidigital number, since it uses as much as digits as its factorization.

5751216898561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288000, while the sum is 64.

The spelling of 5751216898561 in words is "five trillion, seven hundred fifty-one billion, two hundred sixteen million, eight hundred ninety-eight thousand, five hundred sixty-one".