40005404123519 has 2 divisors, whose sum is σ = 40005404123520. Its totient is φ = 40005404123518.

The previous prime is 40005404123497. The next prime is 40005404123561. The reversal of 40005404123519 is 91532140450004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40005404123519 - 2¹² = 40005404119423 is a prime.

It is a super-2 number, since 2×40005404123519² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40005404128519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002702061759 + 20002702061760.

It is an arithmetic number, because the mean of its divisors is an integer number (20002702061760).

Almost surely, 2^{40005404123519} is an apocalyptic number.

40005404123519 is a deficient number, since it is larger than the sum of its proper divisors (1).

40005404123519 is an equidigital number, since it uses as much as digits as its factorization.

40005404123519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 40005404123519 in words is "forty trillion, five billion, four hundred four million, one hundred twenty-three thousand, five hundred nineteen".