128317461705087 has 64 divisors (see below), whose sum is σ = 174180241244160. Its totient is φ = 84012992294400.

The previous prime is 128317461705047. The next prime is 128317461705107. The reversal of 128317461705087 is 780507164713821.

It is a happy number.

It is not a de Polignac number, because 128317461705087 - 2⁷ = 128317461704959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128317461705087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128317461705047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94281749287 + ... + 94281750647.

It is an arithmetic number, because the mean of its divisors is an integer number (2721566269440).

Almost surely, 2^{128317461705087} is an apocalyptic number.

128317461705087 is a deficient number, since it is larger than the sum of its proper divisors (45862779539073).

128317461705087 is a wasteful number, since it uses less digits than its factorization.

128317461705087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 15805440, while the sum is 60.

The spelling of 128317461705087 in words is "one hundred twenty-eight trillion, three hundred seventeen billion, four hundred sixty-one million, seven hundred five thousand, eighty-seven".