128745695781740 has 24 divisors (see below), whose sum is σ = 270367610926560. Its totient is φ = 51497964067968.

The previous prime is 128745695781733. The next prime is 128745695781751. The reversal of 128745695781740 is 47187596547821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16266632 + ... + 22849391.

It is an arithmetic number, because the mean of its divisors is an integer number (11265317121940).

Almost surely, 2^{128745695781740} is an apocalyptic number.

128745695781740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128745695781740 is an abundant number, since it is smaller than the sum of its proper divisors (141621915144820).

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

128745695781740 is a wasteful number, since it uses less digits than its factorization.

128745695781740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39280601 (or 39280599 counting only the distinct ones).

The product of its (nonzero) digits is 948326400, while the sum is 74.

The spelling of 128745695781740 in words is "one hundred twenty-eight trillion, seven hundred forty-five billion, six hundred ninety-five million, seven hundred eighty-one thousand, seven hundred forty".