209093132720 has 80 divisors (see below), whose sum is σ = 487947564000. Its totient is φ = 83327053824.

The previous prime is 209093132719. The next prime is 209093132741. The reversal of 209093132720 is 27231390902.

It is a tau number, because it is divible by the number of its divisors (80).

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, 31396751 + ... + 31403409.

It is an arithmetic number, because the mean of its divisors is an integer number (6099344550).

Almost surely, 2^209093132720 is an apocalyptic number.

209093132720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209093132720 is an abundant number, since it is smaller than the sum of its proper divisors (278854431280).

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

209093132720 is a wasteful number, since it uses less digits than its factorization.

209093132720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8070 (or 8064 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 209093132720 in words is "two hundred nine billion, ninety-three million, one hundred thirty-two thousand, seven hundred twenty".