10950855821 has 2 divisors, whose sum is σ = 10950855822. Its totient is φ = 10950855820.

The previous prime is 10950855809. The next prime is 10950855857. The reversal of 10950855821 is 12855805901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8989694596 + 1961161225 = 94814^2 + 44285^2 .

It is an emirp because it is prime and its reverse (12855805901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10950855821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10950885821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5475427910 + 5475427911.

It is an arithmetic number, because the mean of its divisors is an integer number (5475427911).

Almost surely, 2^10950855821 is an apocalyptic number.

It is an amenable number.

10950855821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10950855821 is an equidigital number, since it uses as much as digits as its factorization.

10950855821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 44.

The spelling of 10950855821 in words is "ten billion, nine hundred fifty million, eight hundred fifty-five thousand, eight hundred twenty-one".