20538387144130 has 8 divisors (see below), whose sum is σ = 36969096859452. Its totient is φ = 8215354857648.

The previous prime is 20538387144103. The next prime is 20538387144133. The reversal of 20538387144130 is 3144178383502.

It can be written as a sum of positive squares in 2 ways, for example, as 20404219512609 + 134167631521 = 4517103^2 + 366289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20538387144133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026919357197 + ... + 1026919357216.

Almost surely, 2^{20538387144130} is an apocalyptic number.

20538387144130 is a deficient number, since it is larger than the sum of its proper divisors (16430709715322).

20538387144130 is a wasteful number, since it uses less digits than its factorization.

20538387144130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053838714420.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 20538387144130 in words is "twenty trillion, five hundred thirty-eight billion, three hundred eighty-seven million, one hundred forty-four thousand, one hundred thirty".