26551533438 has 12 divisors (see below), whose sum is σ = 57528322488. Its totient is φ = 8850511140.

The previous prime is 26551533433. The next prime is 26551533473. The reversal of 26551533438 is 83433515562.

26551533438 is a `hidden beast` number, since 2 + 6 + 551 + 53 + 3 + 43 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 26551533393 and 26551533402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26551533433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 737542578 + ... + 737542613.

It is an arithmetic number, because the mean of its divisors is an integer number (4794026874).

Almost surely, 2^26551533438 is an apocalyptic number.

26551533438 is an abundant number, since it is smaller than the sum of its proper divisors (30976789050).

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

26551533438 is a wasteful number, since it uses less digits than its factorization.

26551533438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475085199 (or 1475085196 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 26551533438 in words is "twenty-six billion, five hundred fifty-one million, five hundred thirty-three thousand, four hundred thirty-eight".