26641281464 has 64 divisors (see below), whose sum is σ = 58742159040. Its totient is φ = 11091225600.

The previous prime is 26641281463. The next prime is 26641281479. The reversal of 26641281464 is 46418214662.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26641281461) 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 15 ways as a sum of consecutive naturals, for example, 255332 + ... + 344204.

It is an arithmetic number, because the mean of its divisors is an integer number (917846235).

Almost surely, 2^26641281464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26641281464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29371079520).

26641281464 is an abundant number, since it is smaller than the sum of its proper divisors (32100877576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26641281464 is a wasteful number, since it uses less digits than its factorization.

26641281464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89040 (or 89036 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The spelling of 26641281464 in words is "twenty-six billion, six hundred forty-one million, two hundred eighty-one thousand, four hundred sixty-four".