128027540344705 has 16 divisors (see below), whose sum is σ = 155951464218624. Its totient is φ = 100876919489280.

The previous prime is 128027540344657. The next prime is 128027540344727. The reversal of 128027540344705 is 507443045720821.

It is not a de Polignac number, because 128027540344705 - 2¹¹ = 128027540342657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29048376 + ... + 33164185.

It is an arithmetic number, because the mean of its divisors is an integer number (9746966513664).

Almost surely, 2^{128027540344705} is an apocalyptic number.

It is an amenable number.

128027540344705 is a deficient number, since it is larger than the sum of its proper divisors (27923923873919).

128027540344705 is an equidigital number, since it uses as much as digits as its factorization.

128027540344705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62218776.

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 128027540344705 in words is "one hundred twenty-eight trillion, twenty-seven billion, five hundred forty million, three hundred forty-four thousand, seven hundred five".