27226515520 has 112 divisors (see below), whose sum is σ = 67141849968. Its totient is φ = 10509557760.

The previous prime is 27226515517. The next prime is 27226515541. The reversal of 27226515520 is 2551562272.

It can be written as a sum of positive squares in 8 ways, for example, as 928055296 + 26298460224 = 30464^2 + 162168^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27226515520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021402 + ... + 1047718.

Almost surely, 2^27226515520 is an apocalyptic number.

27226515520 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 27226515520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33570924984).

27226515520 is an abundant number, since it is smaller than the sum of its proper divisors (39915334448).

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

27226515520 is a wasteful number, since it uses less digits than its factorization.

27226515520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26448 (or 26438 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 27226515520 in words is "twenty-seven billion, two hundred twenty-six million, five hundred fifteen thousand, five hundred twenty".