26688420492 has 48 divisors (see below), whose sum is σ = 62607105792. Its totient is φ = 8848515520.

The previous prime is 26688420443. The next prime is 26688420529. The reversal of 26688420492 is 29402488662.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2130367 + ... + 2142857.

It is an arithmetic number, because the mean of its divisors is an integer number (1304314704).

Almost surely, 2^26688420492 is an apocalyptic number.

It is an amenable number.

26688420492 is an abundant number, since it is smaller than the sum of its proper divisors (35918685300).

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

26688420492 is a wasteful number, since it uses less digits than its factorization.

26688420492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13438 (or 13436 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 26688420492 in words is "twenty-six billion, six hundred eighty-eight million, four hundred twenty thousand, four hundred ninety-two".