215453234512 has 20 divisors (see below), whose sum is σ = 417454143700. Its totient is φ = 107723132928.

The previous prime is 215453234501. The next prime is 215453234519. The reversal of 215453234512 is 215432354512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 149509048896 + 65944185616 = 386664^2 + 256796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215453234519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334864 + ... + 736912.

It is an arithmetic number, because the mean of its divisors is an integer number (20872707185).

Almost surely, 2^215453234512 is an apocalyptic number.

It is an amenable number.

215453234512 is a deficient number, since it is larger than the sum of its proper divisors (202000909188).

215453234512 is a wasteful number, since it uses less digits than its factorization.

215453234512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435550 (or 435544 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The spelling of 215453234512 in words is "two hundred fifteen billion, four hundred fifty-three million, two hundred thirty-four thousand, five hundred twelve".