20542657528824 has 32 divisors (see below), whose sum is σ = 51586942686720. Its totient is φ = 6816845994336.

The previous prime is 20542657528819. The next prime is 20542657528829. The reversal of 20542657528824 is 42882575624502.

It is an interprime number because it is at equal distance from previous prime (20542657528819) and next prime (20542657528829).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542657528829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919151742 + ... + 1919162445.

It is an arithmetic number, because the mean of its divisors is an integer number (1612091958960).

Almost surely, 2^{20542657528824} is an apocalyptic number.

20542657528824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20542657528824 is an abundant number, since it is smaller than the sum of its proper divisors (31044285157896).

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

20542657528824 is a wasteful number, since it uses less digits than its factorization.

20542657528824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838314419 (or 3838314415 counting only the distinct ones).

The product of its (nonzero) digits is 86016000, while the sum is 60.

The spelling of 20542657528824 in words is "twenty trillion, five hundred forty-two billion, six hundred fifty-seven million, five hundred twenty-eight thousand, eight hundred twenty-four".