40143728377 has 2 divisors, whose sum is σ = 40143728378. Its totient is φ = 40143728376.

The previous prime is 40143728321. The next prime is 40143728441. The reversal of 40143728377 is 77382734104.

40143728377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36247971321 + 3895757056 = 190389^2 + 62416^2 .

It is a cyclic number.

It is not a de Polignac number, because 40143728377 - 2¹⁹ = 40143204089 is a prime.

It is a super-2 number, since 2×40143728377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40143720377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071864188 + 20071864189.

It is an arithmetic number, because the mean of its divisors is an integer number (20071864189).

Almost surely, 2^40143728377 is an apocalyptic number.

It is an amenable number.

40143728377 is a deficient number, since it is larger than the sum of its proper divisors (1).

40143728377 is an equidigital number, since it uses as much as digits as its factorization.

40143728377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 40143728377 in words is "forty billion, one hundred forty-three million, seven hundred twenty-eight thousand, three hundred seventy-seven".