26285847840 has 960 divisors, whose sum is σ = 112124694528. Its totient is φ = 5673369600.

The previous prime is 26285847823. The next prime is 26285847893. The reversal of 26285847840 is 4874858262.

26285847840 is a `hidden beast` number, since 2 + 628 + 5 + 8 + 4 + 7 + 8 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 137622145 + ... + 137622335.

Almost surely, 2^26285847840 is an apocalyptic number.

26285847840 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 26285847840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56062347264).

26285847840 is an abundant number, since it is smaller than the sum of its proper divisors (85838846688).

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

26285847840 is a wasteful number, since it uses less digits than its factorization.

26285847840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 54.

The spelling of 26285847840 in words is "twenty-six billion, two hundred eighty-five million, eight hundred forty-seven thousand, eight hundred forty".