26416679021 has 4 divisors (see below), whose sum is σ = 26421588192. Its totient is φ = 26411769852.

The previous prime is 26416679011. The next prime is 26416679027. The reversal of 26416679021 is 12097661462.

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.

It is a cyclic number.

It is not a de Polignac number, because 26416679021 - 2³⁴ = 9236809837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26416679027) 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, 2446505 + ... + 2457278.

It is an arithmetic number, because the mean of its divisors is an integer number (6605397048).

Almost surely, 2^26416679021 is an apocalyptic number.

It is an amenable number.

26416679021 is a deficient number, since it is larger than the sum of its proper divisors (4909171).

26416679021 is an equidigital number, since it uses as much as digits as its factorization.

26416679021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4909170.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 26416679021 in words is "twenty-six billion, four hundred sixteen million, six hundred seventy-nine thousand, twenty-one".