213030057640 has 32 divisors (see below), whose sum is σ = 480318336000. Its totient is φ = 85034119744.

The previous prime is 213030057629. The next prime is 213030057673. The reversal of 213030057640 is 46750030312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5540080 + ... + 5578399.

It is an arithmetic number, because the mean of its divisors is an integer number (15009948000).

Almost surely, 2^213030057640 is an apocalyptic number.

213030057640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213030057640 is an abundant number, since it is smaller than the sum of its proper divisors (267288278360).

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

213030057640 is a wasteful number, since it uses less digits than its factorization.

213030057640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11118969 (or 11118965 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 213030057640 its reverse (46750030312), we get a palindrome (259780087952).

The spelling of 213030057640 in words is "two hundred thirteen billion, thirty million, fifty-seven thousand, six hundred forty".