26153324021 has 4 divisors (see below), whose sum is σ = 28530898944. Its totient is φ = 23775749100.

The previous prime is 26153324017. The next prime is 26153324027. The reversal of 26153324021 is 12042335162.

It is a happy number.

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 26153324021 - 2² = 26153324017 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 (26153324027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188787445 + ... + 1188787466.

It is an arithmetic number, because the mean of its divisors is an integer number (7132724736).

Almost surely, 2^26153324021 is an apocalyptic number.

It is an amenable number.

26153324021 is a deficient number, since it is larger than the sum of its proper divisors (2377574923).

26153324021 is a wasteful number, since it uses less digits than its factorization.

26153324021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377574922.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 26153324021 its reverse (12042335162), we get a palindrome (38195659183).

The spelling of 26153324021 in words is "twenty-six billion, one hundred fifty-three million, three hundred twenty-four thousand, twenty-one".