217448441541140 has 12 divisors (see below), whose sum is σ = 456641727236436. Its totient is φ = 86979376616448.

The previous prime is 217448441541137. The next prime is 217448441541143. The reversal of 217448441541140 is 41145144844712.

It is an interprime number because it is at equal distance from previous prime (217448441541137) and next prime (217448441541143).

It can be written as a sum of positive squares in 2 ways, for example, as 168873507677956 + 48574933863184 = 12995134^2 + 6969572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217448441541143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5436211038509 + ... + 5436211038548.

It is an arithmetic number, because the mean of its divisors is an integer number (38053477269703).

Almost surely, 2^{217448441541140} is an apocalyptic number.

217448441541140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217448441541140 is an abundant number, since it is smaller than the sum of its proper divisors (239193285695296).

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

217448441541140 is a wasteful number, since it uses less digits than its factorization.

217448441541140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10872422077066 (or 10872422077064 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 50.

The spelling of 217448441541140 in words is "two hundred seventeen trillion, four hundred forty-eight billion, four hundred forty-one million, five hundred forty-one thousand, one hundred forty".