18145757072 has 10 divisors (see below), whose sum is σ = 35157404358. Its totient is φ = 9072878528.

The previous prime is 18145757051. The next prime is 18145757087. The reversal of 18145757072 is 27075754181.

It can be written as a sum of positive squares in only one way, i.e., 17866064896 + 279692176 = 133664^2 + 16724^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567054893 + ... + 567054924.

Almost surely, 2^18145757072 is an apocalyptic number.

It is an amenable number.

18145757072 is a deficient number, since it is larger than the sum of its proper divisors (17011647286).

18145757072 is a wasteful number, since it uses less digits than its factorization.

18145757072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134109825 (or 1134109819 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 47.

The spelling of 18145757072 in words is "eighteen billion, one hundred forty-five million, seven hundred fifty-seven thousand, seventy-two".