18177396472 has 16 divisors (see below), whose sum is σ = 36087478560. Its totient is φ = 8554068864.

The previous prime is 18177396469. The next prime is 18177396487. The reversal of 18177396472 is 27469377181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66828528 + ... + 66828799.

It is an arithmetic number, because the mean of its divisors is an integer number (2255467410).

Almost surely, 2^18177396472 is an apocalyptic number.

It is an amenable number.

18177396472 is a deficient number, since it is larger than the sum of its proper divisors (17910082088).

18177396472 is a wasteful number, since it uses less digits than its factorization.

18177396472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133657350 (or 133657346 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 55.

The spelling of 18177396472 in words is "eighteen billion, one hundred seventy-seven million, three hundred ninety-six thousand, four hundred seventy-two".