10128991158 has 48 divisors (see below), whose sum is σ = 25782893136. Its totient is φ = 2833283520.

The previous prime is 10128991157. The next prime is 10128991189. The reversal of 10128991158 is 85119982101.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10128991151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1964985 + ... + 1970132.

It is an arithmetic number, because the mean of its divisors is an integer number (537143607).

Almost surely, 2^10128991158 is an apocalyptic number.

10128991158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10128991158 is an abundant number, since it is smaller than the sum of its proper divisors (15653901978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10128991158 is a wasteful number, since it uses less digits than its factorization.

10128991158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935149 (or 3935146 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 45.

The spelling of 10128991158 in words is "ten billion, one hundred twenty-eight million, nine hundred ninety-one thousand, one hundred fifty-eight".