26441181921 has 32 divisors (see below), whose sum is σ = 43972992000. Its totient is φ = 13729798080.

The previous prime is 26441181919. The next prime is 26441181937. The reversal of 26441181921 is 12918114462.

It is not a de Polignac number, because 26441181921 - 2¹ = 26441181919 is a prime.

It is a super-2 number, since 2×26441181921² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26441181921.

It is not an unprimeable number, because it can be changed into a prime (26441180921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 544755 + ... + 591303.

It is an arithmetic number, because the mean of its divisors is an integer number (1374156000).

Almost surely, 2^26441181921 is an apocalyptic number.

26441181921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26441181921 is a deficient number, since it is larger than the sum of its proper divisors (17531810079).

26441181921 is a wasteful number, since it uses less digits than its factorization.

26441181921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49029.

The product of its digits is 27648, while the sum is 39.

The spelling of 26441181921 in words is "twenty-six billion, four hundred forty-one million, one hundred eighty-one thousand, nine hundred twenty-one".