26275331720 has 128 divisors (see below), whose sum is σ = 65030999040. Its totient is φ = 9475511040.

The previous prime is 26275331683. The next prime is 26275331741. The reversal of 26275331720 is 2713357262.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 50239379 + ... + 50239901.

It is an arithmetic number, because the mean of its divisors is an integer number (508054680).

Almost surely, 2^26275331720 is an apocalyptic number.

26275331720 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 26275331720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32515499520).

26275331720 is an abundant number, since it is smaller than the sum of its proper divisors (38755667320).

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

26275331720 is a wasteful number, since it uses less digits than its factorization.

26275331720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 38.

Adding to 26275331720 its reverse (2713357262), we get a palindrome (28988688982).

The spelling of 26275331720 in words is "twenty-six billion, two hundred seventy-five million, three hundred thirty-one thousand, seven hundred twenty".