18105502602 has 64 divisors (see below), whose sum is σ = 40306750848. Its totient is φ = 5376000000.

The previous prime is 18105502577. The next prime is 18105502607. The reversal of 18105502602 is 20620550181.

It is a self number, because there is not a number n which added to its sum of digits gives 18105502602.

It is not an unprimeable number, because it can be changed into a prime (18105502607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 632602 + ... + 660602.

It is an arithmetic number, because the mean of its divisors is an integer number (629792982).

Almost surely, 2^18105502602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18105502602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20153375424).

18105502602 is an abundant number, since it is smaller than the sum of its proper divisors (22201248246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18105502602 is a wasteful number, since it uses less digits than its factorization.

18105502602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28215.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 18105502602 in words is "eighteen billion, one hundred five million, five hundred two thousand, six hundred two".