40001304309919 has 2 divisors, whose sum is σ = 40001304309920. Its totient is φ = 40001304309918.

The previous prime is 40001304309851. The next prime is 40001304310003. The reversal of 40001304309919 is 91990340310004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40001304309919 is a prime.

It is a super-2 number, since 2×40001304309919² (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 (40001304309119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000652154959 + 20000652154960.

It is an arithmetic number, because the mean of its divisors is an integer number (20000652154960).

Almost surely, 2^{40001304309919} is an apocalyptic number.

40001304309919 is a deficient number, since it is larger than the sum of its proper divisors (1).

40001304309919 is an equidigital number, since it uses as much as digits as its factorization.

40001304309919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The spelling of 40001304309919 in words is "forty trillion, one billion, three hundred four million, three hundred nine thousand, nine hundred nineteen".