26995578480 has 320 divisors, whose sum is σ = 105409920000. Its totient is φ = 6295200768.

The previous prime is 26995578479. The next prime is 26995578497. The reversal of 26995578480 is 8487559962.

26995578480 is a `hidden beast` number, since 2 + 69 + 95 + 5 + 7 + 8 + 480 = 666.

It is a super-2 number, since 2×26995578480² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 508221 + ... + 558819.

It is an arithmetic number, because the mean of its divisors is an integer number (329406000).

Almost surely, 2^26995578480 is an apocalyptic number.

26995578480 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 26995578480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52704960000).

26995578480 is an abundant number, since it is smaller than the sum of its proper divisors (78414341520).

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

26995578480 is a wasteful number, since it uses less digits than its factorization.

26995578480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50653 (or 50641 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 26995578480 in words is "twenty-six billion, nine hundred ninety-five million, five hundred seventy-eight thousand, four hundred eighty".