20387067759776 has 96 divisors (see below), whose sum is σ = 43709077440000. Its totient is φ = 9323458808832.

The previous prime is 20387067759733. The next prime is 20387067759811. The reversal of 20387067759776 is 67795776078302.

It is a super-2 number, since 2×20387067759776² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447071825 + ... + 447117423.

It is an arithmetic number, because the mean of its divisors is an integer number (455302890000).

Almost surely, 2^{20387067759776} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20387067759776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21854538720000).

20387067759776 is an abundant number, since it is smaller than the sum of its proper divisors (23322009680224).

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

20387067759776 is a wasteful number, since it uses less digits than its factorization.

20387067759776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71014 (or 71006 counting only the distinct ones).

The product of its (nonzero) digits is 1306912320, while the sum is 74.

The spelling of 20387067759776 in words is "twenty trillion, three hundred eighty-seven billion, sixty-seven million, seven hundred fifty-nine thousand, seven hundred seventy-six".