46187785909 has 2 divisors, whose sum is σ = 46187785910. Its totient is φ = 46187785908.

The previous prime is 46187785907. The next prime is 46187786063. The reversal of 46187785909 is 90958778164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46059598225 + 128187684 = 214615^2 + 11322^2 .

It is a cyclic number.

It is not a de Polignac number, because 46187785909 - 2¹ = 46187785907 is a prime.

Together with 46187785907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46187785901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23093892954 + 23093892955.

It is an arithmetic number, because the mean of its divisors is an integer number (23093892955).

Almost surely, 2^46187785909 is an apocalyptic number.

It is an amenable number.

46187785909 is a deficient number, since it is larger than the sum of its proper divisors (1).

46187785909 is an equidigital number, since it uses as much as digits as its factorization.

46187785909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 46187785909 in words is "forty-six billion, one hundred eighty-seven million, seven hundred eighty-five thousand, nine hundred nine".