40345969379 has 2 divisors, whose sum is σ = 40345969380. Its totient is φ = 40345969378.

The previous prime is 40345969337. The next prime is 40345969393. The reversal of 40345969379 is 97396954304.

40345969379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40345969379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40345969579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20172984689 + 20172984690.

It is an arithmetic number, because the mean of its divisors is an integer number (20172984690).

Almost surely, 2^40345969379 is an apocalyptic number.

40345969379 is a deficient number, since it is larger than the sum of its proper divisors (1).

40345969379 is an equidigital number, since it uses as much as digits as its factorization.

40345969379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22044960, while the sum is 59.

The spelling of 40345969379 in words is "forty billion, three hundred forty-five million, nine hundred sixty-nine thousand, three hundred seventy-nine".