213115532540 has 12 divisors (see below), whose sum is σ = 447542618376. Its totient is φ = 85246213008.

The previous prime is 213115532533. The next prime is 213115532557. The reversal of 213115532540 is 45235511312.

213115532540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213115532497 and 213115532506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5327888294 + ... + 5327888333.

It is an arithmetic number, because the mean of its divisors is an integer number (37295218198).

Almost surely, 2^213115532540 is an apocalyptic number.

213115532540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213115532540 is an abundant number, since it is smaller than the sum of its proper divisors (234427085836).

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

213115532540 is a wasteful number, since it uses less digits than its factorization.

213115532540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655776636 (or 10655776634 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 213115532540 in words is "two hundred thirteen billion, one hundred fifteen million, five hundred thirty-two thousand, five hundred forty".