33145454009 has 2 divisors, whose sum is σ = 33145454010. Its totient is φ = 33145454008.

The previous prime is 33145454003. The next prime is 33145454053. The reversal of 33145454009 is 90045454133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32707807609 + 437646400 = 180853^2 + 20920^2 .

It is a cyclic number.

It is not a de Polignac number, because 33145454009 - 2⁴ = 33145453993 is a prime.

It is a super-2 number, since 2×33145454009² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33145454003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572727004 + 16572727005.

It is an arithmetic number, because the mean of its divisors is an integer number (16572727005).

Almost surely, 2^33145454009 is an apocalyptic number.

It is an amenable number.

33145454009 is a deficient number, since it is larger than the sum of its proper divisors (1).

33145454009 is an equidigital number, since it uses as much as digits as its factorization.

33145454009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 33145454009 in words is "thirty-three billion, one hundred forty-five million, four hundred fifty-four thousand, nine".