26827328641 has 4 divisors (see below), whose sum is σ = 27150549552. Its totient is φ = 26504107732.

The previous prime is 26827328599. The next prime is 26827328657. The reversal of 26827328641 is 14682372862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14682372862 = 2 ⋅7341186431.

It is a cyclic number.

It is not a de Polignac number, because 26827328641 - 2⁷ = 26827328513 is a prime.

It is a super-3 number, since 3×26827328641³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26827328741) 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, 161610331 + ... + 161610496.

It is an arithmetic number, because the mean of its divisors is an integer number (6787637388).

Almost surely, 2^26827328641 is an apocalyptic number.

It is an amenable number.

26827328641 is a deficient number, since it is larger than the sum of its proper divisors (323220911).

26827328641 is an equidigital number, since it uses as much as digits as its factorization.

26827328641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323220910.

The product of its digits is 1548288, while the sum is 49.

The spelling of 26827328641 in words is "twenty-six billion, eight hundred twenty-seven million, three hundred twenty-eight thousand, six hundred forty-one".