128265831045 has 192 divisors, whose sum is σ = 269916364800. Its totient is φ = 57276933120.

The previous prime is 128265831019. The next prime is 128265831053. The reversal of 128265831045 is 540138562821.

128265831045 is a `hidden beast` number, since 1 + 2 + 8 + 26 + 583 + 1 + 0 + 45 = 666.

It is not a de Polignac number, because 128265831045 - 2²³ = 128257442437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 20167576 + ... + 20173934.

It is an arithmetic number, because the mean of its divisors is an integer number (1405814400).

Almost surely, 2^128265831045 is an apocalyptic number.

128265831045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128265831045 is an abundant number, since it is smaller than the sum of its proper divisors (141650533755).

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

128265831045 is a wasteful number, since it uses less digits than its factorization.

128265831045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6465 (or 6442 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 128265831045 in words is "one hundred twenty-eight billion, two hundred sixty-five million, eight hundred thirty-one thousand, forty-five".