26401128620 has 24 divisors (see below), whose sum is σ = 55447801584. Its totient is φ = 10559416896.

The previous prime is 26401128599. The next prime is 26401128631. The reversal of 26401128620 is 2682110462.

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, 164387 + ... + 282533.

It is an arithmetic number, because the mean of its divisors is an integer number (2310325066).

Almost surely, 2^26401128620 is an apocalyptic number.

26401128620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26401128620 is an abundant number, since it is smaller than the sum of its proper divisors (29046672964).

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

26401128620 is a wasteful number, since it uses less digits than its factorization.

26401128620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129329 (or 129327 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 26401128620 in words is "twenty-six billion, four hundred one million, one hundred twenty-eight thousand, six hundred twenty".