40423356877 has 2 divisors, whose sum is σ = 40423356878. Its totient is φ = 40423356876.

The previous prime is 40423356859. The next prime is 40423356887. The reversal of 40423356877 is 77865332404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36415707241 + 4007649636 = 190829^2 + 63306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40423356877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40423356877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40423356817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211678438 + 20211678439.

It is an arithmetic number, because the mean of its divisors is an integer number (20211678439).

Almost surely, 2^40423356877 is an apocalyptic number.

It is an amenable number.

40423356877 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423356877 is an equidigital number, since it uses as much as digits as its factorization.

40423356877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 40423356877 in words is "forty billion, four hundred twenty-three million, three hundred fifty-six thousand, eight hundred seventy-seven".