208159660020 has 96 divisors (see below), whose sum is σ = 660717348480. Its totient is φ = 48542492160.

The previous prime is 208159659997. The next prime is 208159660031. The reversal of 208159660020 is 20066951802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7008111 + ... + 7037750.

It is an arithmetic number, because the mean of its divisors is an integer number (6882472380).

Almost surely, 2^208159660020 is an apocalyptic number.

208159660020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208159660020 is an abundant number, since it is smaller than the sum of its proper divisors (452557688460).

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

208159660020 is a wasteful number, since it uses less digits than its factorization.

208159660020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14045905 (or 14045903 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 208159660020 in words is "two hundred eight billion, one hundred fifty-nine million, six hundred sixty thousand, twenty".