215773256196 has 27 divisors (see below), whose sum is σ = 545433887271. Its totient is φ = 71923489704.

The previous prime is 215773256089. The next prime is 215773256197. The reversal of 215773256196 is 691652377512.

It is a happy number.

The square root of 215773256196 is 464514.

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

215773256196 is a `hidden beast` number, since 2 + 1 + 5 + 7 + 73 + 2 + 561 + 9 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (215773256197) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2748375 + ... + 2825793.

Almost surely, 2^215773256196 is an apocalyptic number.

215773256196 is the 464514-th square number.

It is an amenable number.

215773256196 is an abundant number, since it is smaller than the sum of its proper divisors (329660631075).

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

215773256196 is an frugal number, since it uses more digits than its factorization.

215773256196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154848 (or 77424 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

It can be divided in two parts, 215773 and 256196, that added together give a square (471969 = 687²).

The spelling of 215773256196 in words is "two hundred fifteen billion, seven hundred seventy-three million, two hundred fifty-six thousand, one hundred ninety-six".