40743444377 has 2 divisors, whose sum is σ = 40743444378. Its totient is φ = 40743444376.

The previous prime is 40743444361. The next prime is 40743444389. The reversal of 40743444377 is 77344434704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20589667081 + 20153777296 = 143491^2 + 141964^2 .

It is a cyclic number.

It is not a de Polignac number, because 40743444377 - 2⁴ = 40743444361 is a prime.

It is not a weakly prime, because it can be changed into another prime (40743444317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371722188 + 20371722189.

It is an arithmetic number, because the mean of its divisors is an integer number (20371722189).

Almost surely, 2^40743444377 is an apocalyptic number.

It is an amenable number.

40743444377 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743444377 is an equidigital number, since it uses as much as digits as its factorization.

40743444377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 47.

The spelling of 40743444377 in words is "forty billion, seven hundred forty-three million, four hundred forty-four thousand, three hundred seventy-seven".