26909406920 has 64 divisors (see below), whose sum is σ = 66554706240. Its totient is φ = 9710521600.

The previous prime is 26909406893. The next prime is 26909406929. The reversal of 26909406920 is 2960490962.

It is a super-2 number, since 2×26909406920² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26909406929) 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, 175787 + ... + 291066.

It is an arithmetic number, because the mean of its divisors is an integer number (1039917285).

Almost surely, 2^26909406920 is an apocalyptic number.

26909406920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26909406920 is an abundant number, since it is smaller than the sum of its proper divisors (39645299320).

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

26909406920 is a wasteful number, since it uses less digits than its factorization.

26909406920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467006 (or 467002 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 26909406920 in words is "twenty-six billion, nine hundred nine million, four hundred six thousand, nine hundred twenty".