20869843846895 has 8 divisors (see below), whose sum is σ = 25576659693504. Its totient is φ = 16340643692704.

The previous prime is 20869843846847. The next prime is 20869843846903. The reversal of 20869843846895 is 59864834896802.

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 20869843846895 - 2⁸ = 20869843846639 is a prime.

It is a super-2 number, since 2×20869843846895² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 44403922844 + ... + 44403923313.

It is an arithmetic number, because the mean of its divisors is an integer number (3197082461688).

Almost surely, 2^{20869843846895} is an apocalyptic number.

20869843846895 is a deficient number, since it is larger than the sum of its proper divisors (4706815846609).

20869843846895 is an equidigital number, since it uses as much as digits as its factorization.

20869843846895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88807846209.

The product of its (nonzero) digits is 5733089280, while the sum is 80.

The spelling of 20869843846895 in words is "twenty trillion, eight hundred sixty-nine billion, eight hundred forty-three million, eight hundred forty-six thousand, eight hundred ninety-five".