68457546461 has 2 divisors, whose sum is σ = 68457546462. Its totient is φ = 68457546460.

The previous prime is 68457546439. The next prime is 68457546499. The reversal of 68457546461 is 16464575486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36311208025 + 32146338436 = 190555^2 + 179294^2 .

It is a cyclic number.

It is not a de Polignac number, because 68457546461 - 2¹⁸ = 68457284317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68457546397 and 68457546406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68457546431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34228773230 + 34228773231.

It is an arithmetic number, because the mean of its divisors is an integer number (34228773231).

Almost surely, 2^68457546461 is an apocalyptic number.

It is an amenable number.

68457546461 is a deficient number, since it is larger than the sum of its proper divisors (1).

68457546461 is an equidigital number, since it uses as much as digits as its factorization.

68457546461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19353600, while the sum is 56.

The spelling of 68457546461 in words is "sixty-eight billion, four hundred fifty-seven million, five hundred forty-six thousand, four hundred sixty-one".