20240661375102 has 128 divisors (see below), whose sum is σ = 47062467072000. Its totient is φ = 5684152320000.

The previous prime is 20240661375089. The next prime is 20240661375139. The reversal of 20240661375102 is 20157316604202.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 454813852 + ... + 454858352.

It is an arithmetic number, because the mean of its divisors is an integer number (367675524000).

Almost surely, 2^{20240661375102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20240661375102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23531233536000).

20240661375102 is an abundant number, since it is smaller than the sum of its proper divisors (26821805696898).

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

20240661375102 is a wasteful number, since it uses less digits than its factorization.

20240661375102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45322.

The product of its (nonzero) digits is 120960, while the sum is 39.

Adding to 20240661375102 its reverse (20157316604202), we get a palindrome (40397977979304).

The spelling of 20240661375102 in words is "twenty trillion, two hundred forty billion, six hundred sixty-one million, three hundred seventy-five thousand, one hundred two".