40333994369 has 2 divisors, whose sum is σ = 40333994370. Its totient is φ = 40333994368.

The previous prime is 40333994359. The next prime is 40333994377. The reversal of 40333994369 is 96349933304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23728321600 + 16605672769 = 154040^2 + 128863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40333994369 is a prime.

It is a super-2 number, since 2×40333994369² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40333994369.

It is not a weakly prime, because it can be changed into another prime (40333994329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20166997184 + 20166997185.

It is an arithmetic number, because the mean of its divisors is an integer number (20166997185).

Almost surely, 2^40333994369 is an apocalyptic number.

It is an amenable number.

40333994369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40333994369 is an equidigital number, since it uses as much as digits as its factorization.

40333994369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5668704, while the sum is 53.

The spelling of 40333994369 in words is "forty billion, three hundred thirty-three million, nine hundred ninety-four thousand, three hundred sixty-nine".