6355521716461 has 2 divisors, whose sum is σ = 6355521716462. Its totient is φ = 6355521716460.

The previous prime is 6355521716371. The next prime is 6355521716503. The reversal of 6355521716461 is 1646171255536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5874467112900 + 481054603561 = 2423730^2 + 693581^2 .

It is a cyclic number.

It is not a de Polignac number, because 6355521716461 - 2²⁵ = 6355488162029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6355521716399 and 6355521716408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6355521716261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3177760858230 + 3177760858231.

It is an arithmetic number, because the mean of its divisors is an integer number (3177760858231).

Almost surely, 2^{6355521716461} is an apocalyptic number.

It is an amenable number.

6355521716461 is a deficient number, since it is larger than the sum of its proper divisors (1).

6355521716461 is an equidigital number, since it uses as much as digits as its factorization.

6355521716461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 52.

The spelling of 6355521716461 in words is "six trillion, three hundred fifty-five billion, five hundred twenty-one million, seven hundred sixteen thousand, four hundred sixty-one".