128873527513 has 8 divisors (see below), whose sum is σ = 129097303016. Its totient is φ = 128649945600.

The previous prime is 128873527511. The next prime is 128873527567. The reversal of 128873527513 is 315725378821.

It can be written as a sum of positive squares in 4 ways, for example, as 111280953744 + 17592573769 = 333588^2 + 132637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128873527513 - 2¹ = 128873527511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128873527511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317373 + ... + 1411813.

It is an arithmetic number, because the mean of its divisors is an integer number (16137162877).

Almost surely, 2^128873527513 is an apocalyptic number.

It is an amenable number.

128873527513 is a deficient number, since it is larger than the sum of its proper divisors (223775503).

128873527513 is a wasteful number, since it uses less digits than its factorization.

128873527513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96795.

The product of its digits is 2822400, while the sum is 52.

The spelling of 128873527513 in words is "one hundred twenty-eight billion, eight hundred seventy-three million, five hundred twenty-seven thousand, five hundred thirteen".