20988084883735 has 16 divisors (see below), whose sum is σ = 26673346008000. Its totient is φ = 15799159384576.

The previous prime is 20988084883693. The next prime is 20988084883789. The reversal of 20988084883735 is 53738848088902.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20988084883735 is a prime.

It is a congruent number.

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, 28018315 + ... + 28757644.

It is an arithmetic number, because the mean of its divisors is an integer number (1667084125500).

Almost surely, 2^{20988084883735} is an apocalyptic number.

20988084883735 is a deficient number, since it is larger than the sum of its proper divisors (5685261124265).

20988084883735 is a wasteful number, since it uses less digits than its factorization.

20988084883735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56780330.

The product of its (nonzero) digits is 743178240, while the sum is 73.

The spelling of 20988084883735 in words is "twenty trillion, nine hundred eighty-eight billion, eighty-four million, eight hundred eighty-three thousand, seven hundred thirty-five".