220171793788 has 12 divisors (see below), whose sum is σ = 385322056672. Its totient is φ = 110079777600.

The previous prime is 220171793761. The next prime is 220171793833. The reversal of 220171793788 is 887397171022.

It is a congruent number.

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, 1448388 + ... + 1593163.

Almost surely, 2^220171793788 is an apocalyptic number.

It is an amenable number.

220171793788 is a deficient number, since it is larger than the sum of its proper divisors (165150262884).

220171793788 is a wasteful number, since it uses less digits than its factorization.

220171793788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059652 (or 3059650 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 220171793788 in words is "two hundred twenty billion, one hundred seventy-one million, seven hundred ninety-three thousand, seven hundred eighty-eight".