128730605868481 has 32 divisors (see below), whose sum is σ = 141381603207936. Its totient is φ = 116835041664000.

The previous prime is 128730605868467. The next prime is 128730605868497. The reversal of 128730605868481 is 184868506037821.

It is a cyclic number.

It is not a de Polignac number, because 128730605868481 - 2¹⁹ = 128730605344193 is a prime.

It is a super-2 number, since 2×128730605868481² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128730605868421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83357061 + ... + 84887341.

It is an arithmetic number, because the mean of its divisors is an integer number (4418175100248).

Almost surely, 2^{128730605868481} is an apocalyptic number.

It is an amenable number.

128730605868481 is a deficient number, since it is larger than the sum of its proper divisors (12650997339455).

128730605868481 is a wasteful number, since it uses less digits than its factorization.

128730605868481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532793.

The product of its (nonzero) digits is 123863040, while the sum is 67.

The spelling of 128730605868481 in words is "one hundred twenty-eight trillion, seven hundred thirty billion, six hundred five million, eight hundred sixty-eight thousand, four hundred eighty-one".