18117553126 has 16 divisors (see below), whose sum is σ = 27921533904. Its totient is φ = 8810563104.

The previous prime is 18117553093. The next prime is 18117553127. The reversal of 18117553126 is 62135571181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18117553127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152916 + ... + 244168.

It is an arithmetic number, because the mean of its divisors is an integer number (1745095869).

Almost surely, 2^18117553126 is an apocalyptic number.

18117553126 is a deficient number, since it is larger than the sum of its proper divisors (9803980778).

18117553126 is a wasteful number, since it uses less digits than its factorization.

18117553126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93975.

The product of its digits is 50400, while the sum is 40.

The spelling of 18117553126 in words is "eighteen billion, one hundred seventeen million, five hundred fifty-three thousand, one hundred twenty-six".