40330234181 has 2 divisors, whose sum is σ = 40330234182. Its totient is φ = 40330234180.

The previous prime is 40330234177. The next prime is 40330234213. The reversal of 40330234181 is 18143203304.

It is a happy number.

40330234181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35407948900 + 4922285281 = 188170^2 + 70159^2 .

It is a cyclic number.

It is not a de Polignac number, because 40330234181 - 2² = 40330234177 is a prime.

It is a super-2 number, since 2×40330234181² (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 (40330234111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20165117090 + 20165117091.

It is an arithmetic number, because the mean of its divisors is an integer number (20165117091).

Almost surely, 2^40330234181 is an apocalyptic number.

It is an amenable number.

40330234181 is a deficient number, since it is larger than the sum of its proper divisors (1).

40330234181 is an equidigital number, since it uses as much as digits as its factorization.

40330234181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 40330234181 its reverse (18143203304), we get a palindrome (58473437485).

The spelling of 40330234181 in words is "forty billion, three hundred thirty million, two hundred thirty-four thousand, one hundred eighty-one".