213512213241440 has 24 divisors (see below), whose sum is σ = 504422603783280. Its totient is φ = 85404885296512.

The previous prime is 213512213241433. The next prime is 213512213241517. The reversal of 213512213241440 is 44142312215312.

It is a self number, because there is not a number n which added to its sum of digits gives 213512213241440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667225666220 + ... + 667225666539.

It is an arithmetic number, because the mean of its divisors is an integer number (21017608490970).

Almost surely, 2^{213512213241440} is an apocalyptic number.

213512213241440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213512213241440 is an abundant number, since it is smaller than the sum of its proper divisors (290910390541840).

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

213512213241440 is a wasteful number, since it uses less digits than its factorization.

213512213241440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334451332774 (or 1334451332766 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 213512213241440 its reverse (44142312215312), we get a palindrome (257654525456752).

The spelling of 213512213241440 in words is "two hundred thirteen trillion, five hundred twelve billion, two hundred thirteen million, two hundred forty-one thousand, four hundred forty".