20505131352000 has 168 divisors, whose sum is σ = 73350272625552. Its totient is φ = 5468035008000.

The previous prime is 20505131351993. The next prime is 20505131352023. The reversal of 20505131352000 is 25313150502.

It is a happy number.

20505131352000 is a `hidden beast` number, since 2 + 0 + 5 + 0 + 5 + 131 + 3 + 520 + 0 + 0 = 666.

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, 142324746 + ... + 142468745.

Almost surely, 2^{20505131352000} is an apocalyptic number.

20505131352000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20505131352000 is an abundant number, since it is smaller than the sum of its proper divisors (52845141273552).

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

20505131352000 is a wasteful number, since it uses less digits than its factorization.

20505131352000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284793524 (or 284793501 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 20505131352000 in words is "twenty trillion, five hundred five billion, one hundred thirty-one million, three hundred fifty-two thousand".