128458161064 has 64 divisors (see below), whose sum is σ = 246735882000. Its totient is φ = 62676117504.

The previous prime is 128458161059. The next prime is 128458161071. The reversal of 128458161064 is 460161854821.

It can be written as a sum of positive squares in 8 ways, for example, as 7082568964 + 121375592100 = 84158^2 + 348390^2 .

It is a super-2 number, since 2×128458161064² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82928962 + ... + 82930510.

Almost surely, 2^128458161064 is an apocalyptic number.

It is an amenable number.

128458161064 is a deficient number, since it is larger than the sum of its proper divisors (118277720936).

128458161064 is a wasteful number, since it uses less digits than its factorization.

128458161064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 128458161064 in words is "one hundred twenty-eight billion, four hundred fifty-eight million, one hundred sixty-one thousand, sixty-four".