219930757172 has 24 divisors (see below), whose sum is σ = 439908653184. Its totient is φ = 94245937632.

The previous prime is 219930757141. The next prime is 219930757199. The reversal of 219930757172 is 271757039912.

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, 151928 + ... + 680399.

It is an arithmetic number, because the mean of its divisors is an integer number (18329527216).

Almost surely, 2^219930757172 is an apocalyptic number.

It is an amenable number.

219930757172 is an abundant number, since it is smaller than the sum of its proper divisors (219977896012).

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

219930757172 is a wasteful number, since it uses less digits than its factorization.

219930757172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841775 (or 841773 counting only the distinct ones).

The product of its (nonzero) digits is 1666980, while the sum is 53.

The spelling of 219930757172 in words is "two hundred nineteen billion, nine hundred thirty million, seven hundred fifty-seven thousand, one hundred seventy-two".