7550217346561 has 2 divisors, whose sum is σ = 7550217346562. Its totient is φ = 7550217346560.

The previous prime is 7550217346537. The next prime is 7550217346577. The reversal of 7550217346561 is 1656437120557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4189210123536 + 3361007223025 = 2046756^2 + 1833305^2 .

It is a cyclic number.

It is not a de Polignac number, because 7550217346561 - 2⁷ = 7550217346433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7550217346499 and 7550217346508.

It is not a weakly prime, because it can be changed into another prime (7550217346501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3775108673280 + 3775108673281.

It is an arithmetic number, because the mean of its divisors is an integer number (3775108673281).

Almost surely, 2^{7550217346561} is an apocalyptic number.

It is an amenable number.

7550217346561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7550217346561 is an equidigital number, since it uses as much as digits as its factorization.

7550217346561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 7550217346561 in words is "seven trillion, five hundred fifty billion, two hundred seventeen million, three hundred forty-six thousand, five hundred sixty-one".