18030012500005 has 32 divisors (see below), whose sum is σ = 23653771383168. Its totient is φ = 13084494931200.

The previous prime is 18030012499973. The next prime is 18030012500063. The reversal of 18030012500005 is 50000521003081.

It is a happy number.

It is not a de Polignac number, because 18030012500005 - 2⁵ = 18030012499973 is a prime.

It is a super-3 number, since 3×18030012500005³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262805367 + ... + 262873963.

It is an arithmetic number, because the mean of its divisors is an integer number (739180355724).

Almost surely, 2^{18030012500005} is an apocalyptic number.

It is an amenable number.

18030012500005 is a deficient number, since it is larger than the sum of its proper divisors (5623758883163).

18030012500005 is a wasteful number, since it uses less digits than its factorization.

18030012500005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78837.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 18030012500005 its reverse (50000521003081), we get a palindrome (68030533503086).

It can be divided in two parts, 1803001250000 and 5, that multiplied together give a square (9015006250000 = 3002500²).

The spelling of 18030012500005 in words is "eighteen trillion, thirty billion, twelve million, five hundred thousand, five".