40144542499 has 2 divisors, whose sum is σ = 40144542500. Its totient is φ = 40144542498.

The previous prime is 40144542497. The next prime is 40144542517. The reversal of 40144542499 is 99424544104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40144542499 - 2¹ = 40144542497 is a prime.

It is a super-2 number, since 2×40144542499² (a number of 22 digits) contains 22 as substring.

Together with 40144542497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40144542497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072271249 + 20072271250.

It is an arithmetic number, because the mean of its divisors is an integer number (20072271250).

Almost surely, 2^40144542499 is an apocalyptic number.

40144542499 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144542499 is an equidigital number, since it uses as much as digits as its factorization.

40144542499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 40144542499 in words is "forty billion, one hundred forty-four million, five hundred forty-two thousand, four hundred ninety-nine".