219196257856 has 63 divisors (see below), whose sum is σ = 445645783713. Its totient is φ = 106970680320.

The previous prime is 219196257853. The next prime is 219196257859. The reversal of 219196257856 is 658752691912.

The square root of 219196257856 is 468184.

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

It is an interprime number because it is at equal distance from previous prime (219196257853) and next prime (219196257859).

It can be written as a sum of positive squares in only one way, i.e., 37242824256 + 181953433600 = 192984^2 + 426560^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219196257794 and 219196257803.

It is not an unprimeable number, because it can be changed into a prime (219196257853) 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, 161054616 + ... + 161055976.

Almost surely, 2^219196257856 is an apocalyptic number.

219196257856 is the 468184-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219196257856

219196257856 is an abundant number, since it is smaller than the sum of its proper divisors (226449525857).

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

219196257856 is an frugal number, since it uses more digits than its factorization.

219196257856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820 (or 1406 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 61.

The spelling of 219196257856 in words is "two hundred nineteen billion, one hundred ninety-six million, two hundred fifty-seven thousand, eight hundred fifty-six".