26796657984 has 112 divisors (see below), whose sum is σ = 73336099200. Its totient is φ = 8629493760.

The previous prime is 26796657977. The next prime is 26796658019. The reversal of 26796657984 is 48975669762.

It is a super-2 number, since 2×26796657984² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 794292 + ... + 827340.

It is an arithmetic number, because the mean of its divisors is an integer number (654786600).

Almost surely, 2^26796657984 is an apocalyptic number.

26796657984 is a gapful number since it is divisible by the number (24) 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 26796657984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36668049600).

26796657984 is an abundant number, since it is smaller than the sum of its proper divisors (46539441216).

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

26796657984 is a wasteful number, since it uses less digits than its factorization.

26796657984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33208 (or 33198 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 69.

The spelling of 26796657984 in words is "twenty-six billion, seven hundred ninety-six million, six hundred fifty-seven thousand, nine hundred eighty-four".