18006621702 has 16 divisors (see below), whose sum is σ = 36623638080. Its totient is φ = 5900474792.

The previous prime is 18006621679. The next prime is 18006621707. The reversal of 18006621702 is 20712660081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18006621707) 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, 25432728 + ... + 25433435.

It is an arithmetic number, because the mean of its divisors is an integer number (2288977380).

Almost surely, 2^18006621702 is an apocalyptic number.

18006621702 is an abundant number, since it is smaller than the sum of its proper divisors (18617016378).

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

18006621702 is a wasteful number, since it uses less digits than its factorization.

18006621702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50866227.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 18006621702 in words is "eighteen billion, six million, six hundred twenty-one thousand, seven hundred two".