26428576691 has 8 divisors (see below), whose sum is σ = 28833024000. Its totient is φ = 24024437640.

The previous prime is 26428576687. The next prime is 26428576717. The reversal of 26428576691 is 19667582462.

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

It is a cyclic number.

It is not a de Polignac number, because 26428576691 - 2² = 26428576687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26428576651) 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, 125330 + ... + 261848.

It is an arithmetic number, because the mean of its divisors is an integer number (3604128000).

Almost surely, 2^26428576691 is an apocalyptic number.

26428576691 is a deficient number, since it is larger than the sum of its proper divisors (2404447309).

26428576691 is a wasteful number, since it uses less digits than its factorization.

26428576691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154129.

The product of its digits is 8709120, while the sum is 56.

The spelling of 26428576691 in words is "twenty-six billion, four hundred twenty-eight million, five hundred seventy-six thousand, six hundred ninety-one".