20950451913155 has 8 divisors (see below), whose sum is σ = 25140702314112. Its totient is φ = 16760254851648.

The previous prime is 20950451913109. The next prime is 20950451913161. The reversal of 20950451913155 is 55131915405902.

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

It is a cyclic number.

It is not a de Polignac number, because 20950451913155 - 2¹⁴ = 20950451896771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12465602 + ... + 14046071.

It is an arithmetic number, because the mean of its divisors is an integer number (3142587789264).

Almost surely, 2^{20950451913155} is an apocalyptic number.

20950451913155 is a deficient number, since it is larger than the sum of its proper divisors (4190250400957).

20950451913155 is a wasteful number, since it uses less digits than its factorization.

20950451913155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26669725.

The product of its (nonzero) digits is 1215000, while the sum is 50.

The spelling of 20950451913155 in words is "twenty trillion, nine hundred fifty billion, four hundred fifty-one million, nine hundred thirteen thousand, one hundred fifty-five".