18100535399999 has 8 divisors (see below), whose sum is σ = 19493470097472. Its totient is φ = 16707684391200.

The previous prime is 18100535399923. The next prime is 18100535400019. The reversal of 18100535399999 is 99999353500181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18100535399999 - 2¹⁶ = 18100535334463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18100535393999) 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, 20472599 + ... + 21338424.

It is an arithmetic number, because the mean of its divisors is an integer number (2436683762184).

Almost surely, 2^{18100535399999} is an apocalyptic number.

18100535399999 is a deficient number, since it is larger than the sum of its proper divisors (1392934697473).

18100535399999 is a wasteful number, since it uses less digits than its factorization.

18100535399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41844337.

The product of its (nonzero) digits is 106288200, while the sum is 71.

The spelling of 18100535399999 in words is "eighteen trillion, one hundred billion, five hundred thirty-five million, three hundred ninety-nine thousand, nine hundred ninety-nine".