213507138412 has 12 divisors (see below), whose sum is σ = 395616168360. Its totient is φ = 100473947456.

The previous prime is 213507138353. The next prime is 213507138413. The reversal of 213507138412 is 214831705312.

It is not an unprimeable number, because it can be changed into a prime (213507138413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1569905362 + ... + 1569905497.

It is an arithmetic number, because the mean of its divisors is an integer number (32968014030).

Almost surely, 2^213507138412 is an apocalyptic number.

It is an amenable number.

213507138412 is a deficient number, since it is larger than the sum of its proper divisors (182109029948).

213507138412 is a wasteful number, since it uses less digits than its factorization.

213507138412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139810880 (or 3139810878 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 213507138412 in words is "two hundred thirteen billion, five hundred seven million, one hundred thirty-eight thousand, four hundred twelve".