208381505164464 has 20 divisors (see below), whose sum is σ = 538318888341656. Its totient is φ = 69460501721472.

The previous prime is 208381505164447. The next prime is 208381505164471. The reversal of 208381505164464 is 464461505183802.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170640678749 + ... + 2170640678844.

Almost surely, 2^{208381505164464} is an apocalyptic number.

208381505164464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

208381505164464 is an abundant number, since it is smaller than the sum of its proper divisors (329937383177192).

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

208381505164464 is a wasteful number, since it uses less digits than its factorization.

208381505164464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341281357604 (or 4341281357598 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 57.

The spelling of 208381505164464 in words is "two hundred eight trillion, three hundred eighty-one billion, five hundred five million, one hundred sixty-four thousand, four hundred sixty-four".