20215538752020 has 96 divisors (see below), whose sum is σ = 56973702844800. Its totient is φ = 5355664441344.

The previous prime is 20215538752009. The next prime is 20215538752039. The reversal of 20215538752020 is 2025783551202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4114636 + ... + 7573724.

It is an arithmetic number, because the mean of its divisors is an integer number (593476071300).

Almost surely, 2^{20215538752020} is an apocalyptic number.

20215538752020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20215538752020 is an abundant number, since it is smaller than the sum of its proper divisors (36758164092780).

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

20215538752020 is a wasteful number, since it uses less digits than its factorization.

20215538752020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459737 (or 3459735 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 20215538752020 in words is "twenty trillion, two hundred fifteen billion, five hundred thirty-eight million, seven hundred fifty-two thousand, twenty".