208481251390 has 16 divisors (see below), whose sum is σ = 375282208080. Its totient is φ = 83388954880.

The previous prime is 208481251339. The next prime is 208481251427. The reversal of 208481251390 is 93152184802.

It is a super-2 number, since 2×208481251390² (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 7 ways as a sum of consecutive naturals, for example, 189331 + ... + 672910.

It is an arithmetic number, because the mean of its divisors is an integer number (23455138005).

Almost surely, 2^208481251390 is an apocalyptic number.

208481251390 is a deficient number, since it is larger than the sum of its proper divisors (166800956690).

208481251390 is a wasteful number, since it uses less digits than its factorization.

208481251390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886427.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 208481251390 in words is "two hundred eight billion, four hundred eighty-one million, two hundred fifty-one thousand, three hundred ninety".