128631162204 has 36 divisors (see below), whose sum is σ = 325388975184. Its totient is φ = 42845671872.

The previous prime is 128631162203. The next prime is 128631162217. The reversal of 128631162204 is 402261136821.

It is a happy number.

128631162204 is a `hidden beast` number, since 1 + 2 + 8 + 631 + 16 + 2 + 2 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128631162203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1257697 + ... + 1356120.

It is an arithmetic number, because the mean of its divisors is an integer number (9038582644).

Almost surely, 2^128631162204 is an apocalyptic number.

It is an amenable number.

128631162204 is an abundant number, since it is smaller than the sum of its proper divisors (196757812980).

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

128631162204 is a wasteful number, since it uses less digits than its factorization.

128631162204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615194 (or 2615189 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 128631162204 in words is "one hundred twenty-eight billion, six hundred thirty-one million, one hundred sixty-two thousand, two hundred four".