213139614506440 has 32 divisors (see below), whose sum is σ = 490716786890880. Its totient is φ = 83273151713472.

The previous prime is 213139614506419. The next prime is 213139614506449. The reversal of 213139614506440 is 44605416931312.

It is not an unprimeable number, because it can be changed into a prime (213139614506449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61959188544 + ... + 61959191983.

It is an arithmetic number, because the mean of its divisors is an integer number (15334899590340).

Almost surely, 2^{213139614506440} is an apocalyptic number.

213139614506440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213139614506440 is an abundant number, since it is smaller than the sum of its proper divisors (277577172384440).

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

213139614506440 is a wasteful number, since it uses less digits than its factorization.

213139614506440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123918380581 (or 123918380577 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 213139614506440 in words is "two hundred thirteen trillion, one hundred thirty-nine billion, six hundred fourteen million, five hundred six thousand, four hundred forty".