16361506718238 has 32 divisors (see below), whose sum is σ = 36849375839232. Its totient is φ = 4798095811200.

The previous prime is 16361506718233. The next prime is 16361506718239. The reversal of 16361506718238 is 83281760516361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16361506718233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3998411131 + ... + 3998415222.

It is an arithmetic number, because the mean of its divisors is an integer number (1151542994976).

Almost surely, 2^{16361506718238} is an apocalyptic number.

16361506718238 is an abundant number, since it is smaller than the sum of its proper divisors (20487869120994).

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

16361506718238 is a wasteful number, since it uses less digits than its factorization.

16361506718238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996826400.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 16361506718238 in words is "sixteen trillion, three hundred sixty-one billion, five hundred six million, seven hundred eighteen thousand, two hundred thirty-eight".