40018188677 has 2 divisors, whose sum is σ = 40018188678. Its totient is φ = 40018188676.

The previous prime is 40018188671. The next prime is 40018188697. The reversal of 40018188677 is 77688181004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21362453281 + 18655735396 = 146159^2 + 136586^2 .

It is a cyclic number.

It is not a de Polignac number, because 40018188677 - 2⁸ = 40018188421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40018188671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20009094338 + 20009094339.

It is an arithmetic number, because the mean of its divisors is an integer number (20009094339).

Almost surely, 2^40018188677 is an apocalyptic number.

It is an amenable number.

40018188677 is a deficient number, since it is larger than the sum of its proper divisors (1).

40018188677 is an equidigital number, since it uses as much as digits as its factorization.

40018188677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 40018188677 in words is "forty billion, eighteen million, one hundred eighty-eight thousand, six hundred seventy-seven".