26928796509 has 12 divisors (see below), whose sum is σ = 38903434752. Its totient is φ = 17949630600.

The previous prime is 26928796487. The next prime is 26928796519. The reversal of 26928796509 is 90569782962.

26928796509 is a `hidden beast` number, since 269 + 287 + 96 + 5 + 0 + 9 = 666.

It is not a de Polignac number, because 26928796509 - 2⁸ = 26928796253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26928796519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182127 + ... + 295004.

It is an arithmetic number, because the mean of its divisors is an integer number (3241952896).

Almost surely, 2^26928796509 is an apocalyptic number.

It is an amenable number.

26928796509 is a deficient number, since it is larger than the sum of its proper divisors (11974638243).

26928796509 is a wasteful number, since it uses less digits than its factorization.

26928796509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483408 (or 483405 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 26928796509 in words is "twenty-six billion, nine hundred twenty-eight million, seven hundred ninety-six thousand, five hundred nine".