26020606660 has 24 divisors (see below), whose sum is σ = 54646988760. Its totient is φ = 10407535104.

The previous prime is 26020606649. The next prime is 26020606699. The reversal of 26020606660 is 6660602062.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 734518404 + 25286088256 = 27102^2 + 159016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337836 + ... + 407644.

It is an arithmetic number, because the mean of its divisors is an integer number (2276957865).

Almost surely, 2^26020606660 is an apocalyptic number.

26020606660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26020606660 is an abundant number, since it is smaller than the sum of its proper divisors (28626382100).

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

26020606660 is a wasteful number, since it uses less digits than its factorization.

26020606660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88455 (or 88453 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 26020606660 in words is "twenty-six billion, twenty million, six hundred six thousand, six hundred sixty".