26661076305864 has 1024 divisors, whose sum is σ = 94976692715520. Its totient is φ = 6014518272000.

The previous prime is 26661076305839. The next prime is 26661076305959. The reversal of 26661076305864 is 46850367016662.

It is a junction number, because it is equal to n+sod(n) for n = 26661076305798 and 26661076305807.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3860004699 + ... + 3860011605.

It is an arithmetic number, because the mean of its divisors is an integer number (92750676480).

Almost surely, 2^{26661076305864} is an apocalyptic number.

26661076305864 is a gapful number since it is divisible by the number (24) 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 26661076305864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47488346357760).

26661076305864 is an abundant number, since it is smaller than the sum of its proper divisors (68315616409656).

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

26661076305864 is a wasteful number, since it uses less digits than its factorization.

26661076305864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122 (or 7118 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 60.

The spelling of 26661076305864 in words is "twenty-six trillion, six hundred sixty-one billion, seventy-six million, three hundred five thousand, eight hundred sixty-four".