206021450455 has 8 divisors (see below), whose sum is σ = 247477247712. Its totient is φ = 164649488928.

The previous prime is 206021450449. The next prime is 206021450461. The reversal of 206021450455 is 554054120602.

It is an interprime number because it is at equal distance from previous prime (206021450449) and next prime (206021450461).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206021450455 - 2⁵ = 206021450423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206021450455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20953524 + ... + 20963353.

It is an arithmetic number, because the mean of its divisors is an integer number (30934655964).

Almost surely, 2^206021450455 is an apocalyptic number.

206021450455 is a deficient number, since it is larger than the sum of its proper divisors (41455797257).

206021450455 is an equidigital number, since it uses as much as digits as its factorization.

206021450455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41917865.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 206021450455 in words is "two hundred six billion, twenty-one million, four hundred fifty thousand, four hundred fifty-five".