40144224437 has 2 divisors, whose sum is σ = 40144224438. Its totient is φ = 40144224436.

The previous prime is 40144224413. The next prime is 40144224451. The reversal of 40144224437 is 73442244104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26542600561 + 13601623876 = 162919^2 + 116626^2 .

It is a cyclic number.

It is not a de Polignac number, because 40144224437 - 2¹⁸ = 40143962293 is a prime.

It is a super-2 number, since 2×40144224437² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144224397 and 40144224406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40144224457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072112218 + 20072112219.

It is an arithmetic number, because the mean of its divisors is an integer number (20072112219).

Almost surely, 2^40144224437 is an apocalyptic number.

It is an amenable number.

40144224437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144224437 is an equidigital number, since it uses as much as digits as its factorization.

40144224437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 35.

The spelling of 40144224437 in words is "forty billion, one hundred forty-four million, two hundred twenty-four thousand, four hundred thirty-seven".