20868100286616 has 96 divisors (see below), whose sum is σ = 63939297240000. Its totient is φ = 6323666747040.

The previous prime is 20868100286581. The next prime is 20868100286633. The reversal of 20868100286616 is 61668200186802.

20868100286616 is a `hidden beast` number, since 2 + 0 + 8 + 6 + 8 + 10 + 0 + 2 + 8 + 6 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 487915866 + ... + 487958633.

It is an arithmetic number, because the mean of its divisors is an integer number (666034346250).

Almost surely, 2^{20868100286616} is an apocalyptic number.

It is an amenable number.

20868100286616 is an abundant number, since it is smaller than the sum of its proper divisors (43071196953384).

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

20868100286616 is a wasteful number, since it uses less digits than its factorization.

20868100286616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975874531 (or 975874515 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 20868100286616 in words is "twenty trillion, eight hundred sixty-eight billion, one hundred million, two hundred eighty-six thousand, six hundred sixteen".