26278934220 has 1152 divisors, whose sum is σ = 113183723520. Its totient is φ = 4985487360.

The previous prime is 26278934207. The next prime is 26278934239. The reversal of 26278934220 is 2243987262.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 232556884 + ... + 232556996.

It is an arithmetic number, because the mean of its divisors is an integer number (98249760).

Almost surely, 2^26278934220 is an apocalyptic number.

26278934220 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 26278934220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56591861760).

26278934220 is an abundant number, since it is smaller than the sum of its proper divisors (86904789300).

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

26278934220 is a wasteful number, since it uses less digits than its factorization.

26278934220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 26278934220 in words is "twenty-six billion, two hundred seventy-eight million, nine hundred thirty-four thousand, two hundred twenty".