128955537 has 16 divisors (see below), whose sum is σ = 195706560. Its totient is φ = 83872800.

The previous prime is 128955493. The next prime is 128955539. The reversal of 128955537 is 735559821.

128955537 is a `hidden beast` number, since 1 + 2 + 8 + 95 + 553 + 7 = 666.

It is not a de Polignac number, because 128955537 - 2¹⁹ = 128431249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128955492 and 128955501.

It is not an unprimeable number, because it can be changed into a prime (128955539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57139 + ... + 59352.

It is an arithmetic number, because the mean of its divisors is an integer number (12231660).

Almost surely, 2^128955537 is an apocalyptic number.

It is an amenable number.

128955537 is a deficient number, since it is larger than the sum of its proper divisors (66751023).

128955537 is a wasteful number, since it uses less digits than its factorization.

128955537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116541 (or 116535 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 128955537 is about 11355.8591484749. The cubic root of 128955537 is about 505.2193759812.

The spelling of 128955537 in words is "one hundred twenty-eight million, nine hundred fifty-five thousand, five hundred thirty-seven".