13131451021500 has 576 divisors, whose sum is σ = 48002263545600. Its totient is φ = 2959875072000.

The previous prime is 13131451021499. The next prime is 13131451021501. The reversal of 13131451021500 is 512015413131.

13131451021500 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 145 + 10 + 2 + 1 + 500 = 666.

It is an interprime number because it is at equal distance from previous prime (13131451021499) and next prime (13131451021501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131451021501) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1090555480 + ... + 1090567520.

It is an arithmetic number, because the mean of its divisors is an integer number (83337263100).

Almost surely, 2^{13131451021500} is an apocalyptic number.

13131451021500 is a gapful number since it is divisible by the number (10) 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 13131451021500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24001131772800).

13131451021500 is an abundant number, since it is smaller than the sum of its proper divisors (34870812524100).

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

13131451021500 is a wasteful number, since it uses less digits than its factorization.

13131451021500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551 (or 12536 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 13131451021500 its reverse (512015413131), we get a palindrome (13643466434631).

The spelling of 13131451021500 in words is "thirteen trillion, one hundred thirty-one billion, four hundred fifty-one million, twenty-one thousand, five hundred".