26291340328 has 32 divisors (see below), whose sum is σ = 54535187520. Its totient is φ = 11782288000.

The previous prime is 26291340233. The next prime is 26291340373. The reversal of 26291340328 is 82304319262.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2097733 + ... + 2110228.

It is an arithmetic number, because the mean of its divisors is an integer number (1704224610).

Almost surely, 2^26291340328 is an apocalyptic number.

It is an amenable number.

26291340328 is an abundant number, since it is smaller than the sum of its proper divisors (28243847192).

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

26291340328 is a wasteful number, since it uses less digits than its factorization.

26291340328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208049 (or 4208045 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 26291340328 in words is "twenty-six billion, two hundred ninety-one million, three hundred forty thousand, three hundred twenty-eight".