128037516685 has 32 divisors (see below), whose sum is σ = 167179364352. Its totient is φ = 93571372800.

The previous prime is 128037516683. The next prime is 128037516731. The reversal of 128037516685 is 586615730821.

It is not a de Polignac number, because 128037516685 - 2¹ = 128037516683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128037516683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23677252 + ... + 23682658.

It is an arithmetic number, because the mean of its divisors is an integer number (5224355136).

Almost surely, 2^128037516685 is an apocalyptic number.

It is an amenable number.

128037516685 is a deficient number, since it is larger than the sum of its proper divisors (39141847667).

128037516685 is a wasteful number, since it uses less digits than its factorization.

128037516685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9133.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 128037516685 in words is "one hundred twenty-eight billion, thirty-seven million, five hundred sixteen thousand, six hundred eighty-five".