26128627836 has 24 divisors (see below), whose sum is σ = 64553081040. Its totient is φ = 8197216512.

The previous prime is 26128627823. The next prime is 26128627919. The reversal of 26128627836 is 63872682162.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 64040551 + ... + 64040958.

It is an arithmetic number, because the mean of its divisors is an integer number (2689711710).

Almost surely, 2^26128627836 is an apocalyptic number.

It is an amenable number.

26128627836 is an abundant number, since it is smaller than the sum of its proper divisors (38424453204).

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

26128627836 is a wasteful number, since it uses less digits than its factorization.

26128627836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128081533 (or 128081531 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The spelling of 26128627836 in words is "twenty-six billion, one hundred twenty-eight million, six hundred twenty-seven thousand, eight hundred thirty-six".