26128560747 has 4 divisors (see below), whose sum is σ = 34838081000. Its totient is φ = 17419040496.

The previous prime is 26128560743. The next prime is 26128560761. The reversal of 26128560747 is 74706582162.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 26128560747 - 2² = 26128560743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26128560696 and 26128560705.

It is not an unprimeable number, because it can be changed into a prime (26128560743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4354760122 + ... + 4354760127.

It is an arithmetic number, because the mean of its divisors is an integer number (8709520250).

Almost surely, 2^26128560747 is an apocalyptic number.

26128560747 is a deficient number, since it is larger than the sum of its proper divisors (8709520253).

26128560747 is an equidigital number, since it uses as much as digits as its factorization.

26128560747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8709520252.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 26128560747 in words is "twenty-six billion, one hundred twenty-eight million, five hundred sixty thousand, seven hundred forty-seven".