64128235235 has 8 divisors (see below), whose sum is σ = 76956341136. Its totient is φ = 51300948960.

The previous prime is 64128235211. The next prime is 64128235247. The reversal of 64128235235 is 53253282146.

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

It is not a de Polignac number, because 64128235235 - 2²⁸ = 63859799779 is a prime.

It is a super-2 number, since 2×64128235235² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64128235192 and 64128235201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17129 + ... + 358538.

It is an arithmetic number, because the mean of its divisors is an integer number (9619542642).

Almost surely, 2^64128235235 is an apocalyptic number.

64128235235 is a deficient number, since it is larger than the sum of its proper divisors (12828105901).

64128235235 is a wasteful number, since it uses less digits than its factorization.

64128235235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409813.

The product of its digits is 345600, while the sum is 41.

The spelling of 64128235235 in words is "sixty-four billion, one hundred twenty-eight million, two hundred thirty-five thousand, two hundred thirty-five".