128572065073650 has 96 divisors (see below), whose sum is σ = 366153555744000. Its totient is φ = 29528512545600.

The previous prime is 128572065073649. The next prime is 128572065073687. The reversal of 128572065073650 is 56370560275821.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 47 ways as a sum of consecutive naturals, for example, 2050559800 + ... + 2050622499.

It is an arithmetic number, because the mean of its divisors is an integer number (3814099539000).

Almost surely, 2^{128572065073650} is an apocalyptic number.

128572065073650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128572065073650 is an abundant number, since it is smaller than the sum of its proper divisors (237581490670350).

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

128572065073650 is a wasteful number, since it uses less digits than its factorization.

128572065073650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101182344 (or 4101182339 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 57.

The spelling of 128572065073650 in words is "one hundred twenty-eight trillion, five hundred seventy-two billion, sixty-five million, seventy-three thousand, six hundred fifty".