40340340377 has 2 divisors, whose sum is σ = 40340340378. Its totient is φ = 40340340376.

The previous prime is 40340340373. The next prime is 40340340431. The reversal of 40340340377 is 77304304304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37927173001 + 2413167376 = 194749^2 + 49124^2 .

It is a cyclic number.

It is not a de Polignac number, because 40340340377 - 2² = 40340340373 is a prime.

It is not a weakly prime, because it can be changed into another prime (40340340373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170170188 + 20170170189.

It is an arithmetic number, because the mean of its divisors is an integer number (20170170189).

Almost surely, 2^40340340377 is an apocalyptic number.

It is an amenable number.

40340340377 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340340377 is an equidigital number, since it uses as much as digits as its factorization.

40340340377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 35.

The spelling of 40340340377 in words is "forty billion, three hundred forty million, three hundred forty thousand, three hundred seventy-seven".