18513188115801 has 16 divisors (see below), whose sum is σ = 25275019714560. Its totient is φ = 12047120885520.

The previous prime is 18513188115781. The next prime is 18513188115803. The reversal of 18513188115801 is 10851188131581.

It is not a de Polignac number, because 18513188115801 - 2¹⁷ = 18513187984729 is a prime.

It is a super-2 number, since 2×18513188115801² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18513188115803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47294521 + ... + 47684358.

It is an arithmetic number, because the mean of its divisors is an integer number (1579688732160).

Almost surely, 2^{18513188115801} is an apocalyptic number.

It is an amenable number.

18513188115801 is a deficient number, since it is larger than the sum of its proper divisors (6761831598759).

18513188115801 is a wasteful number, since it uses less digits than its factorization.

18513188115801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94980436.

The product of its (nonzero) digits is 307200, while the sum is 51.

The spelling of 18513188115801 in words is "eighteen trillion, five hundred thirteen billion, one hundred eighty-eight million, one hundred fifteen thousand, eight hundred one".