40001342369 has 2 divisors, whose sum is σ = 40001342370. Its totient is φ = 40001342368.

The previous prime is 40001342323. The next prime is 40001342399. The reversal of 40001342369 is 96324310004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39194100625 + 807241744 = 197975^2 + 28412^2 .

It is a cyclic number.

It is not a de Polignac number, because 40001342369 - 2⁸ = 40001342113 is a prime.

It is a super-2 number, since 2×40001342369² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40001342399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000671184 + 20000671185.

It is an arithmetic number, because the mean of its divisors is an integer number (20000671185).

Almost surely, 2^40001342369 is an apocalyptic number.

It is an amenable number.

40001342369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40001342369 is an equidigital number, since it uses as much as digits as its factorization.

40001342369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 40001342369 in words is "forty billion, one million, three hundred forty-two thousand, three hundred sixty-nine".