26731283136 has 224 divisors, whose sum is σ = 75949332480. Its totient is φ = 8279040000.

The previous prime is 26731283113. The next prime is 26731283203. The reversal of 26731283136 is 63138213762.

It is a super-2 number, since 2×26731283136² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43324300 + ... + 43324916.

It is an arithmetic number, because the mean of its divisors is an integer number (339059520).

Almost surely, 2^26731283136 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 26731283136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37974666240).

26731283136 is an abundant number, since it is smaller than the sum of its proper divisors (49218049344).

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

26731283136 is a wasteful number, since it uses less digits than its factorization.

26731283136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 933 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

Adding to 26731283136 its reverse (63138213762), we get a palindrome (89869496898).

The spelling of 26731283136 in words is "twenty-six billion, seven hundred thirty-one million, two hundred eighty-three thousand, one hundred thirty-six".