40423356377 has 2 divisors, whose sum is σ = 40423356378. Its totient is φ = 40423356376.

The previous prime is 40423356343. The next prime is 40423356383. The reversal of 40423356377 is 77365332404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37842309961 + 2581046416 = 194531^2 + 50804^2 .

It is a cyclic number.

It is not a de Polignac number, because 40423356377 - 2³⁴ = 23243487193 is a prime.

It is a super-2 number, since 2×40423356377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40423356877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211678188 + 20211678189.

It is an arithmetic number, because the mean of its divisors is an integer number (20211678189).

Almost surely, 2^40423356377 is an apocalyptic number.

It is an amenable number.

40423356377 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423356377 is an equidigital number, since it uses as much as digits as its factorization.

40423356377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 44.

The spelling of 40423356377 in words is "forty billion, four hundred twenty-three million, three hundred fifty-six thousand, three hundred seventy-seven".