208162454544 has 90 divisors (see below), whose sum is σ = 640340928318. Its totient is φ = 63079526400.

The previous prime is 208162454543. The next prime is 208162454581. The reversal of 208162454544 is 445454261802.

208162454544 is a `hidden beast` number, since 2 + 0 + 8 + 1 + 62 + 4 + 545 + 44 = 666.

208162454544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 176642002944 + 31520451600 = 420288^2 + 177540^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 208162454544.

It is not an unprimeable number, because it can be changed into a prime (208162454543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5956017 + ... + 5990864.

Almost surely, 2^208162454544 is an apocalyptic number.

208162454544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

208162454544 is an abundant number, since it is smaller than the sum of its proper divisors (432178473774).

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

208162454544 is a wasteful number, since it uses less digits than its factorization.

208162454544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11946917 (or 11946897 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

The spelling of 208162454544 in words is "two hundred eight billion, one hundred sixty-two million, four hundred fifty-four thousand, five hundred forty-four".