33846956821 has 2 divisors, whose sum is σ = 33846956822. Its totient is φ = 33846956820.

The previous prime is 33846956779. The next prime is 33846956851. The reversal of 33846956821 is 12865964833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27733906225 + 6113050596 = 166535^2 + 78186^2 .

It is a cyclic number.

It is not a de Polignac number, because 33846956821 - 2¹¹ = 33846954773 is a prime.

It is a super-2 number, since 2×33846956821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33846956851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16923478410 + 16923478411.

It is an arithmetic number, because the mean of its divisors is an integer number (16923478411).

Almost surely, 2^33846956821 is an apocalyptic number.

It is an amenable number.

33846956821 is a deficient number, since it is larger than the sum of its proper divisors (1).

33846956821 is an equidigital number, since it uses as much as digits as its factorization.

33846956821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 55.

The spelling of 33846956821 in words is "thirty-three billion, eight hundred forty-six million, nine hundred fifty-six thousand, eight hundred twenty-one".