26866195020 has 240 divisors, whose sum is σ = 98139843648. Its totient is φ = 6024844800.

The previous prime is 26866195007. The next prime is 26866195087. The reversal of 26866195020 is 2059166862.

26866195020 is a `hidden beast` number, since 2 + 6 + 8 + 6 + 619 + 5 + 0 + 20 = 666.

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 79 ways as a sum of consecutive naturals, for example, 578670 + ... + 623370.

Almost surely, 2^26866195020 is an apocalyptic number.

26866195020 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 26866195020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49069921824).

26866195020 is an abundant number, since it is smaller than the sum of its proper divisors (71273648628).

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

26866195020 is a wasteful number, since it uses less digits than its factorization.

26866195020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44782 (or 44771 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 26866195020 in words is "twenty-six billion, eight hundred sixty-six million, one hundred ninety-five thousand, twenty".