214640331572 has 12 divisors (see below), whose sum is σ = 375629191140. Its totient is φ = 107317705536.

The previous prime is 214640331541. The next prime is 214640331611. The reversal of 214640331572 is 275133046412.

It can be written as a sum of positive squares in 2 ways, for example, as 114402238756 + 100238092816 = 338234^2 + 316604^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411263 + ... + 773574.

It is an arithmetic number, because the mean of its divisors is an integer number (31302432595).

Almost surely, 2^214640331572 is an apocalyptic number.

It is an amenable number.

214640331572 is a deficient number, since it is larger than the sum of its proper divisors (160988859568).

214640331572 is a wasteful number, since it uses less digits than its factorization.

214640331572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230130 (or 1230128 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

Adding to 214640331572 its reverse (275133046412), we get a palindrome (489773377984).

The spelling of 214640331572 in words is "two hundred fourteen billion, six hundred forty million, three hundred thirty-one thousand, five hundred seventy-two".