64881023143553 has 2 divisors, whose sum is σ = 64881023143554. Its totient is φ = 64881023143552.

The previous prime is 64881023143331. The next prime is 64881023143561. The reversal of 64881023143553 is 35534132018846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52931328753664 + 11949694389889 = 7275392^2 + 3456833^2 .

It is a cyclic number.

It is not a de Polignac number, because 64881023143553 - 2¹⁶ = 64881023078017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64881023143495 and 64881023143504.

It is not a weakly prime, because it can be changed into another prime (64881023143753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32440511571776 + 32440511571777.

It is an arithmetic number, because the mean of its divisors is an integer number (32440511571777).

Almost surely, 2^{64881023143553} is an apocalyptic number.

It is an amenable number.

64881023143553 is a deficient number, since it is larger than the sum of its proper divisors (1).

64881023143553 is an equidigital number, since it uses as much as digits as its factorization.

64881023143553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 53.

The spelling of 64881023143553 in words is "sixty-four trillion, eight hundred eighty-one billion, twenty-three million, one hundred forty-three thousand, five hundred fifty-three".