20070989551536 has 1920 divisors, whose sum is σ = 77666160476160. Its totient is φ = 4383254937600.

The previous prime is 20070989551517. The next prime is 20070989551537. The reversal of 20070989551536 is 63515598907002.

It is a self number, because there is not a number n which added to its sum of digits gives 20070989551536.

It is not an unprimeable number, because it can be changed into a prime (20070989551537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 9094239745 + ... + 9094241951.

It is an arithmetic number, because the mean of its divisors is an integer number (40451125248).

Almost surely, 2^{20070989551536} 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 20070989551536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38833080238080).

20070989551536 is an abundant number, since it is smaller than the sum of its proper divisors (57595170924624).

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

20070989551536 is a wasteful number, since it uses less digits than its factorization.

20070989551536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 60.

The spelling of 20070989551536 in words is "twenty trillion, seventy billion, nine hundred eighty-nine million, five hundred fifty-one thousand, five hundred thirty-six".