208347338440 has 16 divisors (see below), whose sum is σ = 468781511580. Its totient is φ = 83338935360.

The previous prime is 208347338393. The next prime is 208347338477. The reversal of 208347338440 is 44833743802.

It can be written as a sum of positive squares in 2 ways, for example, as 208087419556 + 259918884 = 456166^2 + 16122^2 .

It is a super-2 number, since 2×208347338440² (a number of 23 digits) contains 22 as substring.

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, 2604341691 + ... + 2604341770.

Almost surely, 2^208347338440 is an apocalyptic number.

208347338440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208347338440 is an abundant number, since it is smaller than the sum of its proper divisors (260434173140).

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

208347338440 is a wasteful number, since it uses less digits than its factorization.

208347338440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208683472 (or 5208683468 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 46.

The spelling of 208347338440 in words is "two hundred eight billion, three hundred forty-seven million, three hundred thirty-eight thousand, four hundred forty".