213040120510520 has 64 divisors (see below), whose sum is σ = 500183338835520. Its totient is φ = 81510646339584.

The previous prime is 213040120510519. The next prime is 213040120510531. The reversal of 213040120510520 is 25015021040312.

It is a self number, because there is not a number n which added to its sum of digits gives 213040120510520.

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 15 ways as a sum of consecutive naturals, for example, 321077024 + ... + 321739856.

It is an arithmetic number, because the mean of its divisors is an integer number (7815364669305).

Almost surely, 2^{213040120510520} is an apocalyptic number.

213040120510520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213040120510520 is an abundant number, since it is smaller than the sum of its proper divisors (287143218325000).

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

213040120510520 is a wasteful number, since it uses less digits than its factorization.

213040120510520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012224 (or 1012220 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 213040120510520 its reverse (25015021040312), we get a palindrome (238055141550832).

The spelling of 213040120510520 in words is "two hundred thirteen trillion, forty billion, one hundred twenty million, five hundred ten thousand, five hundred twenty".