208894464001 has 4 divisors (see below), whose sum is σ = 211241592900. Its totient is φ = 206547335104.

The previous prime is 208894463983. The next prime is 208894464029. The reversal of 208894464001 is 100464498802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100464498802 = 2 ⋅50232249401.

It can be written as a sum of positive squares in 2 ways, for example, as 84250867600 + 124643596401 = 290260^2 + 353049^2 .

It is a cyclic number.

It is not a de Polignac number, because 208894464001 - 2¹⁵ = 208894431233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208894464061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173564316 + ... + 1173564493.

It is an arithmetic number, because the mean of its divisors is an integer number (52810398225).

Almost surely, 2^208894464001 is an apocalyptic number.

It is an amenable number.

208894464001 is a deficient number, since it is larger than the sum of its proper divisors (2347128899).

208894464001 is an equidigital number, since it uses as much as digits as its factorization.

208894464001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347128898.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 208894464001 in words is "two hundred eight billion, eight hundred ninety-four million, four hundred sixty-four thousand, one".