206919453456 has 45 divisors (see below), whose sum is σ = 579102358471. Its totient is φ = 68971331616.

The previous prime is 206919453413. The next prime is 206919453473. The reversal of 206919453456 is 654354919602.

The square root of 206919453456 is 454884.

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

206919453456 is a `hidden beast` number, since 206 + 9 + 1 + 94 + 5 + 345 + 6 = 666.

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, 5439655 + ... + 5477561.

Almost surely, 2^206919453456 is an apocalyptic number.

206919453456 is the 454884-th square number.

It is an amenable number.

206919453456 is an abundant number, since it is smaller than the sum of its proper divisors (372182905015).

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

206919453456 is an frugal number, since it uses more digits than its factorization.

206919453456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75828 (or 37912 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 206919453456 in words is "two hundred six billion, nine hundred nineteen million, four hundred fifty-three thousand, four hundred fifty-six".