208006408078 has 32 divisors (see below), whose sum is σ = 357512601600. Its totient is φ = 88913225664.

The previous prime is 208006408067. The next prime is 208006408109. The reversal of 208006408078 is 870804600802.

It is a super-2 number, since 2×208006408078² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19694163 + ... + 19704721.

It is an arithmetic number, because the mean of its divisors is an integer number (11172268800).

Almost surely, 2^208006408078 is an apocalyptic number.

208006408078 is a deficient number, since it is larger than the sum of its proper divisors (149506193522).

208006408078 is a wasteful number, since it uses less digits than its factorization.

208006408078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104.

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 208006408078 in words is "two hundred eight billion, six million, four hundred eight thousand, seventy-eight".