40144242349 has 2 divisors, whose sum is σ = 40144242350. Its totient is φ = 40144242348.

The previous prime is 40144242337. The next prime is 40144242353. The reversal of 40144242349 is 94324244104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32933175625 + 7211066724 = 181475^2 + 84918^2 .

It is a cyclic number.

It is not a de Polignac number, because 40144242349 - 2¹³ = 40144234157 is a prime.

It is a super-2 number, since 2×40144242349² (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 (40144242049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072121174 + 20072121175.

It is an arithmetic number, because the mean of its divisors is an integer number (20072121175).

Almost surely, 2^40144242349 is an apocalyptic number.

It is an amenable number.

40144242349 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144242349 is an equidigital number, since it uses as much as digits as its factorization.

40144242349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 40144242349 in words is "forty billion, one hundred forty-four million, two hundred forty-two thousand, three hundred forty-nine".