26990559232 has 240 divisors, whose sum is σ = 68142777472. Its totient is φ = 10404495360.

The previous prime is 26990559229. The next prime is 26990559319. The reversal of 26990559232 is 23295509962.

It is a super-2 number, since 2×26990559232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 26990559232.

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, 64110382 + ... + 64110802.

Almost surely, 2^26990559232 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 26990559232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34071388736).

26990559232 is an abundant number, since it is smaller than the sum of its proper divisors (41152218240).

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

26990559232 is an equidigital number, since it uses as much as digits as its factorization.

26990559232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 52.

The spelling of 26990559232 in words is "twenty-six billion, nine hundred ninety million, five hundred fifty-nine thousand, two hundred thirty-two".