26656775420 has 96 divisors (see below), whose sum is σ = 64339591680. Its totient is φ = 9175023360.

The previous prime is 26656775381. The next prime is 26656775441. The reversal of 26656775420 is 2457765662.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6447674 + ... + 6451806.

It is an arithmetic number, because the mean of its divisors is an integer number (670204080).

Almost surely, 2^26656775420 is an apocalyptic number.

26656775420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26656775420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32169795840).

26656775420 is an abundant number, since it is smaller than the sum of its proper divisors (37682816260).

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

26656775420 is a wasteful number, since it uses less digits than its factorization.

26656775420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715 (or 5713 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 26656775420 in words is "twenty-six billion, six hundred fifty-six million, seven hundred seventy-five thousand, four hundred twenty".