20547135504260 has 24 divisors (see below), whose sum is σ = 44636880579480. Its totient is φ = 7935445435904.

The previous prime is 20547135504187. The next prime is 20547135504277. The reversal of 20547135504260 is 6240553174502.

It can be written as a sum of positive squares in 4 ways, for example, as 75365622784 + 20471769881476 = 274528^2 + 4524574^2 .

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 7 ways as a sum of consecutive naturals, for example, 17713047269 + ... + 17713048428.

It is an arithmetic number, because the mean of its divisors is an integer number (1859870024145).

Almost surely, 2^{20547135504260} is an apocalyptic number.

20547135504260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20547135504260 is an abundant number, since it is smaller than the sum of its proper divisors (24089745075220).

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

20547135504260 is a wasteful number, since it uses less digits than its factorization.

20547135504260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35426095735 (or 35426095733 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 44.

Adding to 20547135504260 its reverse (6240553174502), we get a palindrome (26787688678762).

The spelling of 20547135504260 in words is "twenty trillion, five hundred forty-seven billion, one hundred thirty-five million, five hundred four thousand, two hundred sixty".