20531532515200 has 192 divisors, whose sum is σ = 58131983779200. Its totient is φ = 7019093514240.

The previous prime is 20531532515149. The next prime is 20531532515231. The reversal of 20531532515200 is 251523513502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6452071 + ... + 9093529.

It is an arithmetic number, because the mean of its divisors is an integer number (302770748850).

Almost surely, 2^{20531532515200} is an apocalyptic number.

20531532515200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20531532515200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29065991889600).

20531532515200 is an abundant number, since it is smaller than the sum of its proper divisors (37600451264000).

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

20531532515200 is a wasteful number, since it uses less digits than its factorization.

20531532515200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641837 (or 2641820 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 20531532515200 in words is "twenty trillion, five hundred thirty-one billion, five hundred thirty-two million, five hundred fifteen thousand, two hundred".