208149145443 has 64 divisors (see below), whose sum is σ = 334890547200. Its totient is φ = 127264919040.

The previous prime is 208149145441. The next prime is 208149145447. The reversal of 208149145443 is 344541941802.

208149145443 is a `hidden beast` number, since 2 + 0 + 8 + 14 + 91 + 4 + 544 + 3 = 666.

It is not a de Polignac number, because 208149145443 - 2¹ = 208149145441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208149145441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8494413 + ... + 8518881.

It is an arithmetic number, because the mean of its divisors is an integer number (5232664800).

Almost surely, 2^208149145443 is an apocalyptic number.

208149145443 is a deficient number, since it is larger than the sum of its proper divisors (126741401757).

208149145443 is a wasteful number, since it uses less digits than its factorization.

208149145443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24969 (or 24963 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 208149145443 in words is "two hundred eight billion, one hundred forty-nine million, one hundred forty-five thousand, four hundred forty-three".