26475565420 has 48 divisors (see below), whose sum is σ = 58084427520. Its totient is φ = 10117838016.

The previous prime is 26475565379. The next prime is 26475565421. The reversal of 26475565420 is 2456557462.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (26475565421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 361639 + ... + 428641.

It is an arithmetic number, because the mean of its divisors is an integer number (1210092240).

Almost surely, 2^26475565420 is an apocalyptic number.

26475565420 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 26475565420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29042213760).

26475565420 is an abundant number, since it is smaller than the sum of its proper divisors (31608862100).

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

26475565420 is a wasteful number, since it uses less digits than its factorization.

26475565420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67894 (or 67892 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 46.

The spelling of 26475565420 in words is "twenty-six billion, four hundred seventy-five million, five hundred sixty-five thousand, four hundred twenty".