26606221421364 has 144 divisors (see below), whose sum is σ = 72750431596752. Its totient is φ = 8150101825536.

The previous prime is 26606221421359. The next prime is 26606221421369. The reversal of 26606221421364 is 46312412260662.

It is a happy number.

26606221421364 is a `hidden beast` number, since 2 + 6 + 6 + 0 + 622 + 1 + 4 + 2 + 13 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (26606221421359) and next prime (26606221421369).

It can be written as a sum of positive squares in 8 ways, for example, as 6301806915600 + 20304414505764 = 2510340^2 + 4506042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26606221421369) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 865030674 + ... + 865061430.

It is an arithmetic number, because the mean of its divisors is an integer number (505211330533).

Almost surely, 2^{26606221421364} 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 26606221421364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36375215798376).

26606221421364 is an abundant number, since it is smaller than the sum of its proper divisors (46144210175388).

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

26606221421364 is a wasteful number, since it uses less digits than its factorization.

26606221421364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38946 (or 38941 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 26606221421364 in words is "twenty-six trillion, six hundred six billion, two hundred twenty-one million, four hundred twenty-one thousand, three hundred sixty-four".