18347957362952 has 80 divisors (see below), whose sum is σ = 40160784776700. Its totient is φ = 7858117048320.

The previous prime is 18347957362951. The next prime is 18347957362957. The reversal of 18347957362952 is 25926375974381.

It can be written as a sum of positive squares in 2 ways, for example, as 17681066272996 + 666891089956 = 4204886^2 + 816634^2 .

It is not an unprimeable number, because it can be changed into a prime (18347957362951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28279952 + ... + 28921472.

Almost surely, 2^{18347957362952} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18347957362952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20080392388350).

18347957362952 is an abundant number, since it is smaller than the sum of its proper divisors (21812827413748).

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

18347957362952 is an equidigital number, since it uses as much as digits as its factorization.

18347957362952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643044 (or 643019 counting only the distinct ones).

The product of its digits is 685843200, while the sum is 71.

The spelling of 18347957362952 in words is "eighteen trillion, three hundred forty-seven billion, nine hundred fifty-seven million, three hundred sixty-two thousand, nine hundred fifty-two".