128011895156 has 24 divisors (see below), whose sum is σ = 233821613760. Its totient is φ = 61207166592.

The previous prime is 128011895153. The next prime is 128011895197. The reversal of 128011895156 is 651598110821.

It is a self number, because there is not a number n which added to its sum of digits gives 128011895156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128011895153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178895 + ... + 536681.

It is an arithmetic number, because the mean of its divisors is an integer number (9742567240).

Almost surely, 2^128011895156 is an apocalyptic number.

It is a pronic number, being equal to 357787×357788.

It is an amenable number.

128011895156 is a deficient number, since it is larger than the sum of its proper divisors (105809718604).

128011895156 is a wasteful number, since it uses less digits than its factorization.

128011895156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361703 (or 361701 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 47.

The spelling of 128011895156 in words is "one hundred twenty-eight billion, eleven million, eight hundred ninety-five thousand, one hundred fifty-six".