21442510532240 has 60 divisors (see below), whose sum is σ = 57993238955196. Its totient is φ = 7351717895424.

The previous prime is 21442510532189. The next prime is 21442510532321. The reversal of 21442510532240 is 4223501524412.

It can be written as a sum of positive squares in 2 ways, for example, as 4651234115584 + 16791276416656 = 2156672^2 + 4097716^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 21442510532240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2735010179 + ... + 2735018018.

Almost surely, 2^{21442510532240} is an apocalyptic number.

21442510532240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442510532240 is an abundant number, since it is smaller than the sum of its proper divisors (36550728422956).

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

21442510532240 is a wasteful number, since it uses less digits than its factorization.

21442510532240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470028224 (or 5470028211 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 21442510532240 in words is "twenty-one trillion, four hundred forty-two billion, five hundred ten million, five hundred thirty-two thousand, two hundred forty".