55646534321087 has 2 divisors, whose sum is σ = 55646534321088. Its totient is φ = 55646534321086.

The previous prime is 55646534320987. The next prime is 55646534321141. The reversal of 55646534321087 is 78012343564655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55646534321087 - 2¹² = 55646534316991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55646534321887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27823267160543 + 27823267160544.

It is an arithmetic number, because the mean of its divisors is an integer number (27823267160544).

Almost surely, 2^{55646534321087} is an apocalyptic number.

55646534321087 is a deficient number, since it is larger than the sum of its proper divisors (1).

55646534321087 is an equidigital number, since it uses as much as digits as its factorization.

55646534321087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576000, while the sum is 59.

The spelling of 55646534321087 in words is "fifty-five trillion, six hundred forty-six billion, five hundred thirty-four million, three hundred twenty-one thousand, eighty-seven".