128633583811 has 8 divisors (see below), whose sum is σ = 129196804464. Its totient is φ = 128070458880.

The previous prime is 128633583791. The next prime is 128633583893. The reversal of 128633583811 is 118385336821.

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 128633583811 - 2⁵ = 128633583779 is a prime.

It is a super-2 number, since 2×128633583811² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128633589811) 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, 4631476 + ... + 4659166.

It is an arithmetic number, because the mean of its divisors is an integer number (16149600558).

Almost surely, 2^128633583811 is an apocalyptic number.

128633583811 is a deficient number, since it is larger than the sum of its proper divisors (563220653).

128633583811 is a wasteful number, since it uses less digits than its factorization.

128633583811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47861.

The product of its digits is 829440, while the sum is 49.

The spelling of 128633583811 in words is "one hundred twenty-eight billion, six hundred thirty-three million, five hundred eighty-three thousand, eight hundred eleven".