26021081280 has 448 divisors, whose sum is σ = 92024045568. Its totient is φ = 6196101120.

The previous prime is 26021081239. The next prime is 26021081287. The reversal of 26021081280 is 8218012062.

It is a super-3 number, since 3×26021081280³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (26021081287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67939969 + ... + 67940351.

It is an arithmetic number, because the mean of its divisors is an integer number (205410816).

Almost surely, 2^26021081280 is an apocalyptic number.

26021081280 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 26021081280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46012022784).

26021081280 is an abundant number, since it is smaller than the sum of its proper divisors (66002964288).

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

26021081280 is a wasteful number, since it uses less digits than its factorization.

26021081280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The spelling of 26021081280 in words is "twenty-six billion, twenty-one million, eighty-one thousand, two hundred eighty".