208814989340 has 24 divisors (see below), whose sum is σ = 457577195040. Its totient is φ = 79894430528.

The previous prime is 208814989337. The next prime is 208814989351. The reversal of 208814989340 is 43989418802.

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, 226972355 + ... + 226973274.

It is an arithmetic number, because the mean of its divisors is an integer number (19065716460).

Almost surely, 2^208814989340 is an apocalyptic number.

208814989340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208814989340 is an abundant number, since it is smaller than the sum of its proper divisors (248762205700).

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

208814989340 is a wasteful number, since it uses less digits than its factorization.

208814989340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453945661 (or 453945659 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 208814989340 in words is "two hundred eight billion, eight hundred fourteen million, nine hundred eighty-nine thousand, three hundred forty".