20868068748154 has 32 divisors (see below), whose sum is σ = 31715864699904. Its totient is φ = 10296410501040.

The previous prime is 20868068748139. The next prime is 20868068748187. The reversal of 20868068748154 is 45184786086802.

It is a self number, because there is not a number n which added to its sum of digits gives 20868068748154.

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, 654504297 + ... + 654536179.

It is an arithmetic number, because the mean of its divisors is an integer number (991120771872).

Almost surely, 2^{20868068748154} is an apocalyptic number.

20868068748154 is a deficient number, since it is larger than the sum of its proper divisors (10847795951750).

20868068748154 is a wasteful number, since it uses less digits than its factorization.

20868068748154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36402.

The product of its (nonzero) digits is 165150720, while the sum is 67.

The spelling of 20868068748154 in words is "twenty trillion, eight hundred sixty-eight billion, sixty-eight million, seven hundred forty-eight thousand, one hundred fifty-four".