20346727124520 has 96 divisors (see below), whose sum is σ = 66149536045320. Its totient is φ = 5423933560320.

The previous prime is 20346727124501. The next prime is 20346727124539. The reversal of 20346727124520 is 2542172764302.

20346727124520 is a `hidden beast` number, since 2 + 0 + 3 + 46 + 72 + 7 + 12 + 4 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (20346727124501) and next prime (20346727124539).

It can be written as a sum of positive squares in 4 ways, for example, as 20228243846724 + 118483277796 = 4497582^2 + 344214^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8637691 + ... + 10737930.

Almost surely, 2^{20346727124520} is an apocalyptic number.

20346727124520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20346727124520 is an abundant number, since it is smaller than the sum of its proper divisors (45802808920800).

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

20346727124520 is a wasteful number, since it uses less digits than its factorization.

20346727124520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19378555 (or 19378548 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

Adding to 20346727124520 its reverse (2542172764302), we get a palindrome (22888899888822).

The spelling of 20346727124520 in words is "twenty trillion, three hundred forty-six billion, seven hundred twenty-seven million, one hundred twenty-four thousand, five hundred twenty".