26228420668212 has 72 divisors (see below), whose sum is σ = 73115520224544. Its totient is φ = 7291298403648.

The previous prime is 26228420668169. The next prime is 26228420668243. The reversal of 26228420668212 is 21286602482262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 602764158 + ... + 602807669.

It is an arithmetic number, because the mean of its divisors is an integer number (1015493336452).

Almost surely, 2^{26228420668212} is an apocalyptic number.

It is an amenable number.

26228420668212 is an abundant number, since it is smaller than the sum of its proper divisors (46887099556332).

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

26228420668212 is a wasteful number, since it uses less digits than its factorization.

26228420668212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205571885 (or 1205571876 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 51.

The spelling of 26228420668212 in words is "twenty-six trillion, two hundred twenty-eight billion, four hundred twenty million, six hundred sixty-eight thousand, two hundred twelve".