17945798828 has 6 divisors (see below), whose sum is σ = 31405147956. Its totient is φ = 8972899412.

The previous prime is 17945798809. The next prime is 17945798831. The reversal of 17945798828 is 82889754971.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2243224850 + ... + 2243224857.

It is an arithmetic number, because the mean of its divisors is an integer number (5234191326).

Almost surely, 2^17945798828 is an apocalyptic number.

It is an amenable number.

17945798828 is a deficient number, since it is larger than the sum of its proper divisors (13459349128).

17945798828 is a wasteful number, since it uses less digits than its factorization.

17945798828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486449711 (or 4486449709 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 68.

The spelling of 17945798828 in words is "seventeen billion, nine hundred forty-five million, seven hundred ninety-eight thousand, eight hundred twenty-eight".