18159477696 has 112 divisors (see below), whose sum is σ = 56195366400. Its totient is φ = 5734561536.

The previous prime is 18159477653. The next prime is 18159477701. The reversal of 18159477696 is 69677495181.

18159477696 is a `hidden beast` number, since 1 + 8 + 159 + 477 + 6 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243720 + ... + 309383.

Almost surely, 2^18159477696 is an apocalyptic number.

18159477696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18159477696 is an abundant number, since it is smaller than the sum of its proper divisors (38035888704).

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

18159477696 is a wasteful number, since it uses less digits than its factorization.

18159477696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553143 (or 553127 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The spelling of 18159477696 in words is "eighteen billion, one hundred fifty-nine million, four hundred seventy-seven thousand, six hundred ninety-six".