18138959010601 has 16 divisors (see below), whose sum is σ = 21549545095680. Its totient is φ = 15050475918720.

The previous prime is 18138959010581. The next prime is 18138959010617. The reversal of 18138959010601 is 10601095983181.

It is not a de Polignac number, because 18138959010601 - 2³⁹ = 17589203196713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18138959010631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712604505 + ... + 712629958.

It is an arithmetic number, because the mean of its divisors is an integer number (1346846568480).

Almost surely, 2^{18138959010601} is an apocalyptic number.

18138959010601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18138959010601 is a deficient number, since it is larger than the sum of its proper divisors (3410586085079).

18138959010601 is a wasteful number, since it uses less digits than its factorization.

18138959010601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425234576.

The product of its (nonzero) digits is 466560, while the sum is 52.

The spelling of 18138959010601 in words is "eighteen trillion, one hundred thirty-eight billion, nine hundred fifty-nine million, ten thousand, six hundred one".