20868941620154 has 8 divisors (see below), whose sum is σ = 31303489308960. Its totient is φ = 10434445183836.

The previous prime is 20868941620139. The next prime is 20868941620187. The reversal of 20868941620154 is 45102614986802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20868941620154.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11778464 + ... + 13433915.

It is an arithmetic number, because the mean of its divisors is an integer number (3912936163620).

Almost surely, 2^{20868941620154} is an apocalyptic number.

20868941620154 is a deficient number, since it is larger than the sum of its proper divisors (10434547688806).

20868941620154 is a wasteful number, since it uses less digits than its factorization.

20868941620154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25626244.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 20868941620154 in words is "twenty trillion, eight hundred sixty-eight billion, nine hundred forty-one million, six hundred twenty thousand, one hundred fifty-four".