59446782678421 has 2 divisors, whose sum is σ = 59446782678422. Its totient is φ = 59446782678420.

The previous prime is 59446782678359. The next prime is 59446782678469. The reversal of 59446782678421 is 12487628764495.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48938559272100 + 10508223406321 = 6995610^2 + 3241639^2 .

It is a cyclic number.

It is not a de Polignac number, because 59446782678421 - 2¹¹ = 59446782676373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (59446782678121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29723391339210 + 29723391339211.

It is an arithmetic number, because the mean of its divisors is an integer number (29723391339211).

Almost surely, 2^{59446782678421} is an apocalyptic number.

It is an amenable number.

59446782678421 is a deficient number, since it is larger than the sum of its proper divisors (1).

59446782678421 is an equidigital number, since it uses as much as digits as its factorization.

59446782678421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1300561920, while the sum is 73.

The spelling of 59446782678421 in words is "fifty-nine trillion, four hundred forty-six billion, seven hundred eighty-two million, six hundred seventy-eight thousand, four hundred twenty-one".