128985056286616 has 32 divisors (see below), whose sum is σ = 242274669120000. Its totient is φ = 64378499137056.

The previous prime is 128985056286589. The next prime is 128985056286631. The reversal of 128985056286616 is 616682650589821.

It is a super-2 number, since 2×128985056286616² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47357155 + ... + 50006701.

It is an arithmetic number, because the mean of its divisors is an integer number (7571083410000).

Almost surely, 2^{128985056286616} is an apocalyptic number.

It is an amenable number.

128985056286616 is a deficient number, since it is larger than the sum of its proper divisors (113289612833384).

128985056286616 is a wasteful number, since it uses less digits than its factorization.

128985056286616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660311 (or 2660307 counting only the distinct ones).

The product of its (nonzero) digits is 597196800, while the sum is 73.

The spelling of 128985056286616 in words is "one hundred twenty-eight trillion, nine hundred eighty-five billion, fifty-six million, two hundred eighty-six thousand, six hundred sixteen".