20887442583520 has 48 divisors (see below), whose sum is σ = 49347116526960. Its totient is φ = 8354886718464.

The previous prime is 20887442583439. The next prime is 20887442583563. The reversal of 20887442583520 is 2538524478802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15268819 + ... + 16580461.

It is an arithmetic number, because the mean of its divisors is an integer number (1028064927645).

Almost surely, 2^{20887442583520} is an apocalyptic number.

20887442583520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20887442583520 is an abundant number, since it is smaller than the sum of its proper divisors (28459673943440).

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

20887442583520 is a wasteful number, since it uses less digits than its factorization.

20887442583520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411187 (or 1411179 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 58.

The spelling of 20887442583520 in words is "twenty trillion, eight hundred eighty-seven billion, four hundred forty-two million, five hundred eighty-three thousand, five hundred twenty".