213041244111440 has 40 divisors (see below), whose sum is σ = 495328521811680. Its totient is φ = 85215185085056.

The previous prime is 213041244111431. The next prime is 213041244111491. The reversal of 213041244111440 is 44111442140312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 213041244111397 and 213041244111406.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15274070 + ... + 25678389.

It is an arithmetic number, because the mean of its divisors is an integer number (12383213045292).

Almost surely, 2^{213041244111440} is an apocalyptic number.

213041244111440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213041244111440 is an abundant number, since it is smaller than the sum of its proper divisors (282287277700240).

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

213041244111440 is a wasteful number, since it uses less digits than its factorization.

213041244111440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41017499 (or 41017493 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 213041244111440 its reverse (44111442140312), we get a palindrome (257152686251752).

The spelling of 213041244111440 in words is "two hundred thirteen trillion, forty-one billion, two hundred forty-four million, one hundred eleven thousand, four hundred forty".