26144786220 has 192 divisors, whose sum is σ = 88209945600. Its totient is φ = 5652218880.

The previous prime is 26144786197. The next prime is 26144786243. The reversal of 26144786220 is 2268744162.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26144786197) and next prime (26144786243).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 5655510 + ... + 5660130.

It is an arithmetic number, because the mean of its divisors is an integer number (459426800).

Almost surely, 2^26144786220 is an apocalyptic number.

26144786220 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 26144786220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44104972800).

26144786220 is an abundant number, since it is smaller than the sum of its proper divisors (62065159380).

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

26144786220 is a wasteful number, since it uses less digits than its factorization.

26144786220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368 (or 5366 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 26144786220 in words is "twenty-six billion, one hundred forty-four million, seven hundred eighty-six thousand, two hundred twenty".