20087908815520 has 768 divisors, whose sum is σ = 61602741043200. Its totient is φ = 6019325706240.

The previous prime is 20087908815517. The next prime is 20087908815551. The reversal of 20087908815520 is 2551880978002.

It is a super-2 number, since 2×20087908815520² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6761327635 + ... + 6761330605.

It is an arithmetic number, because the mean of its divisors is an integer number (80211902400).

Almost surely, 2^{20087908815520} is an apocalyptic number.

20087908815520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20087908815520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30801370521600).

20087908815520 is an abundant number, since it is smaller than the sum of its proper divisors (41514832227680).

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

20087908815520 is a wasteful number, since it uses less digits than its factorization.

20087908815520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341 (or 3333 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 20087908815520 in words is "twenty trillion, eighty-seven billion, nine hundred eight million, eight hundred fifteen thousand, five hundred twenty".