20869843846903 has 2 divisors, whose sum is σ = 20869843846904. Its totient is φ = 20869843846902.

The previous prime is 20869843846847. The next prime is 20869843846961. The reversal of 20869843846903 is 30964834896802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20869843846903 - 2²¹ = 20869841749751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20869853846903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10434921923451 + 10434921923452.

It is an arithmetic number, because the mean of its divisors is an integer number (10434921923452).

Almost surely, 2^{20869843846903} is an apocalyptic number.

20869843846903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20869843846903 is an equidigital number, since it uses as much as digits as its factorization.

20869843846903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 429981696, while the sum is 70.

The spelling of 20869843846903 in words is "twenty trillion, eight hundred sixty-nine billion, eight hundred forty-three million, eight hundred forty-six thousand, nine hundred three".