128710666636 has 48 divisors (see below), whose sum is σ = 229876526880. Its totient is φ = 63046771200.

The previous prime is 128710666627. The next prime is 128710666691. The reversal of 128710666636 is 636666017821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41964775 + ... + 41967841.

It is an arithmetic number, because the mean of its divisors is an integer number (4789094310).

Almost surely, 2^128710666636 is an apocalyptic number.

It is an amenable number.

128710666636 is a deficient number, since it is larger than the sum of its proper divisors (101165860244).

128710666636 is a wasteful number, since it uses less digits than its factorization.

128710666636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 128710666636 in words is "one hundred twenty-eight billion, seven hundred ten million, six hundred sixty-six thousand, six hundred thirty-six".