26456531220 has 216 divisors, whose sum is σ = 94991455104. Its totient is φ = 5838448896.

The previous prime is 26456531219. The next prime is 26456531237. The reversal of 26456531220 is 2213565462.

26456531220 is a `hidden beast` number, since 2 + 64 + 565 + 3 + 12 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1047177 + ... + 1072143.

Almost surely, 2^26456531220 is an apocalyptic number.

26456531220 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 26456531220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47495727552).

26456531220 is an abundant number, since it is smaller than the sum of its proper divisors (68534923884).

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

26456531220 is a wasteful number, since it uses less digits than its factorization.

26456531220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25047 (or 25013 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 26456531220 in words is "twenty-six billion, four hundred fifty-six million, five hundred thirty-one thousand, two hundred twenty".