212973861453376 has 63 divisors (see below), whose sum is σ = 428672921742993. Its totient is φ = 104983028586240.

The previous prime is 212973861453347. The next prime is 212973861453401. The reversal of 212973861453376 is 673354168379212.

The square root of 212973861453376 is 14593624.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 189488439630400 + 23485421822976 = 13765480^2 + 4846176^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8289165586 + ... + 8289191278.

Almost surely, 2^{212973861453376} is an apocalyptic number.

212973861453376 is the 14593624-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212973861453376

212973861453376 is an abundant number, since it is smaller than the sum of its proper divisors (215699060289617).

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

212973861453376 is an frugal number, since it uses more digits than its factorization.

212973861453376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51540 (or 25766 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 67.

The spelling of 212973861453376 in words is "two hundred twelve trillion, nine hundred seventy-three billion, eight hundred sixty-one million, four hundred fifty-three thousand, three hundred seventy-six".