20536523431130 has 64 divisors (see below), whose sum is σ = 44506430760960. Its totient is φ = 6665055119424.

The previous prime is 20536523431117. The next prime is 20536523431141. The reversal of 20536523431130 is 3113432563502.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4686164 + ... + 7939343.

It is an arithmetic number, because the mean of its divisors is an integer number (695412980640).

Almost surely, 2^{20536523431130} is an apocalyptic number.

20536523431130 is an abundant number, since it is smaller than the sum of its proper divisors (23969907329830).

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

20536523431130 is a wasteful number, since it uses less digits than its factorization.

20536523431130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12626763.

The product of its (nonzero) digits is 194400, while the sum is 38.

Adding to 20536523431130 its reverse (3113432563502), we get a palindrome (23649955994632).

The spelling of 20536523431130 in words is "twenty trillion, five hundred thirty-six billion, five hundred twenty-three million, four hundred thirty-one thousand, one hundred thirty".