40487909177 has 2 divisors, whose sum is σ = 40487909178. Its totient is φ = 40487909176.

The previous prime is 40487909167. The next prime is 40487909233. The reversal of 40487909177 is 77190978404.

It is an a-pointer prime, because the next prime (40487909233) can be obtained adding 40487909177 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38117095696 + 2370813481 = 195236^2 + 48691^2 .

It is a cyclic number.

It is not a de Polignac number, because 40487909177 - 2⁸ = 40487908921 is a prime.

It is not a weakly prime, because it can be changed into another prime (40487909107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20243954588 + 20243954589.

It is an arithmetic number, because the mean of its divisors is an integer number (20243954589).

Almost surely, 2^40487909177 is an apocalyptic number.

It is an amenable number.

40487909177 is a deficient number, since it is larger than the sum of its proper divisors (1).

40487909177 is an equidigital number, since it uses as much as digits as its factorization.

40487909177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 40487909177 in words is "forty billion, four hundred eighty-seven million, nine hundred nine thousand, one hundred seventy-seven".