128354262440457 has 8 divisors (see below), whose sum is σ = 171139297974400. Its totient is φ = 85569367600080.

The previous prime is 128354262440419. The next prime is 128354262440543. The reversal of 128354262440457 is 754044262453821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128354262440457 - 2²² = 128354258246153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128354262440397 and 128354262440406.

It is not an unprimeable number, because it can be changed into a prime (128354262440057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33025969 + ... + 36707262.

It is an arithmetic number, because the mean of its divisors is an integer number (21392412246800).

Almost surely, 2^{128354262440457} is an apocalyptic number.

It is an amenable number.

128354262440457 is a deficient number, since it is larger than the sum of its proper divisors (42785035533943).

128354262440457 is an equidigital number, since it uses as much as digits as its factorization.

128354262440457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70346783.

The product of its (nonzero) digits is 51609600, while the sum is 57.

The spelling of 128354262440457 in words is "one hundred twenty-eight trillion, three hundred fifty-four billion, two hundred sixty-two million, four hundred forty thousand, four hundred fifty-seven".