26202406021 has 4 divisors (see below), whose sum is σ = 28584442944. Its totient is φ = 23820369100.

The previous prime is 26202406001. The next prime is 26202406031. The reversal of 26202406021 is 12060420262.

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 not a de Polignac number, because 26202406021 - 2⁷ = 26202405893 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 (26202406001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191018445 + ... + 1191018466.

It is an arithmetic number, because the mean of its divisors is an integer number (7146110736).

Almost surely, 2^26202406021 is an apocalyptic number.

It is an amenable number.

26202406021 is a deficient number, since it is larger than the sum of its proper divisors (2382036923).

26202406021 is a wasteful number, since it uses less digits than its factorization.

26202406021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382036922.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 26202406021 its reverse (12060420262), we get a palindrome (38262826283).

The spelling of 26202406021 in words is "twenty-six billion, two hundred two million, four hundred six thousand, twenty-one".