26791622740 has 48 divisors (see below), whose sum is σ = 58253262480. Its totient is φ = 10338083840.

The previous prime is 26791622701. The next prime is 26791622743. The reversal of 26791622740 is 4722619762.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12264004 + 26779358736 = 3502^2 + 163644^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26791622743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665424 + ... + 704536.

It is an arithmetic number, because the mean of its divisors is an integer number (1213609635).

Almost surely, 2^26791622740 is an apocalyptic number.

26791622740 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 26791622740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29126631240).

26791622740 is an abundant number, since it is smaller than the sum of its proper divisors (31461639740).

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

26791622740 is a wasteful number, since it uses less digits than its factorization.

26791622740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40332 (or 40330 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 26791622740 in words is "twenty-six billion, seven hundred ninety-one million, six hundred twenty-two thousand, seven hundred forty".