128512963 has 6 divisors (see below), whose sum is σ = 129131156. Its totient is φ = 127896372.

The previous prime is 128512957. The next prime is 128512981. The reversal of 128512963 is 369215821.

It is not a de Polignac number, because 128512963 - 2⁵ = 128512931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128512913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198306 + ... + 198952.

Almost surely, 2^128512963 is an apocalyptic number.

128512963 is a deficient number, since it is larger than the sum of its proper divisors (618193).

128512963 is an frugal number, since it uses more digits than its factorization.

128512963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601 (or 954 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 128512963 is about 11336.3558077541. The cubic root of 128512963 is about 504.6407443891.

The spelling of 128512963 in words is "one hundred twenty-eight million, five hundred twelve thousand, nine hundred sixty-three".