26430643712128 has 64 divisors (see below), whose sum is σ = 53443906005600. Its totient is φ = 13017294968832.

The previous prime is 26430643712023. The next prime is 26430643712129. The reversal of 26430643712128 is 82121734603462.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (26430643712129) 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, 158203743 + ... + 158370721.

Almost surely, 2^{26430643712128} is an apocalyptic number.

It is an amenable number.

26430643712128 is an abundant number, since it is smaller than the sum of its proper divisors (27013262293472).

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

26430643712128 is a wasteful number, since it uses less digits than its factorization.

26430643712128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185517 (or 185505 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 26430643712128 in words is "twenty-six trillion, four hundred thirty billion, six hundred forty-three million, seven hundred twelve thousand, one hundred twenty-eight".