26791481976 has 128 divisors (see below), whose sum is σ = 81285120000. Its totient is φ = 7183521792.

The previous prime is 26791481971. The next prime is 26791481987. The reversal of 26791481976 is 67918419762.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26791481971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 983305 + ... + 1010183.

It is an arithmetic number, because the mean of its divisors is an integer number (635040000).

Almost surely, 2^26791481976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26791481976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40642560000).

26791481976 is an abundant number, since it is smaller than the sum of its proper divisors (54493638024).

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

26791481976 is a wasteful number, since it uses less digits than its factorization.

26791481976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27261 (or 27257 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The spelling of 26791481976 in words is "twenty-six billion, seven hundred ninety-one million, four hundred eighty-one thousand, nine hundred seventy-six".