26550700021 has 4 divisors (see below), whose sum is σ = 26558113792. Its totient is φ = 26543286252.

The previous prime is 26550700013. The next prime is 26550700031. The reversal of 26550700021 is 12000705562.

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 26550700021 - 2³ = 26550700013 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 (26550700031) 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, 3701511 + ... + 3708676.

It is an arithmetic number, because the mean of its divisors is an integer number (6639528448).

Almost surely, 2^26550700021 is an apocalyptic number.

It is an amenable number.

26550700021 is a deficient number, since it is larger than the sum of its proper divisors (7413771).

26550700021 is an equidigital number, since it uses as much as digits as its factorization.

26550700021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7413770.

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 26550700021 in words is "twenty-six billion, five hundred fifty million, seven hundred thousand, twenty-one".