20945287014012 has 72 divisors (see below), whose sum is σ = 53969851799136. Its totient is φ = 6846747433344.

The previous prime is 20945287013977. The next prime is 20945287014049. The reversal of 20945287014012 is 21041078254902.

20945287014012 is a `hidden beast` number, since 2 + 0 + 9 + 4 + 528 + 70 + 1 + 40 + 12 = 666.

It is a super-2 number, since 2×20945287014012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1351998 + ... + 6611994.

It is an arithmetic number, because the mean of its divisors is an integer number (749581274988).

Almost surely, 2^{20945287014012} 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 20945287014012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26984925899568).

20945287014012 is an abundant number, since it is smaller than the sum of its proper divisors (33024564785124).

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

20945287014012 is a wasteful number, since it uses less digits than its factorization.

20945287014012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262147 (or 5262142 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 20945287014012 in words is "twenty trillion, nine hundred forty-five billion, two hundred eighty-seven million, fourteen thousand, twelve".