18335016772 has 6 divisors (see below), whose sum is σ = 32086279358. Its totient is φ = 9167508384.

The previous prime is 18335016769. The next prime is 18335016839. The reversal of 18335016772 is 27761053381.

It can be written as a sum of positive squares in only one way, i.e., 10763232516 + 7571784256 = 103746^2 + 87016^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2291877093 + ... + 2291877100.

Almost surely, 2^18335016772 is an apocalyptic number.

It is an amenable number.

18335016772 is a deficient number, since it is larger than the sum of its proper divisors (13751262586).

18335016772 is a wasteful number, since it uses less digits than its factorization.

18335016772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583754197 (or 4583754195 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 18335016772 in words is "eighteen billion, three hundred thirty-five million, sixteen thousand, seven hundred seventy-two".