26552221921 has 8 divisors (see below), whose sum is σ = 26757560384. Its totient is φ = 26347401360.

The previous prime is 26552221909. The next prime is 26552221931. The reversal of 26552221921 is 12912225562.

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 26552221921 - 2⁷ = 26552221793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26552221901) 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, 26226 + ... + 231931.

It is an arithmetic number, because the mean of its divisors is an integer number (3344695048).

Almost surely, 2^26552221921 is an apocalyptic number.

It is an amenable number.

26552221921 is a deficient number, since it is larger than the sum of its proper divisors (205338463).

26552221921 is a wasteful number, since it uses less digits than its factorization.

26552221921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258951.

The product of its digits is 43200, while the sum is 37.

The spelling of 26552221921 in words is "twenty-six billion, five hundred fifty-two million, two hundred twenty-one thousand, nine hundred twenty-one".