46312729209 has 28 divisors (see below), whose sum is σ = 70575713892. Its totient is φ = 30368973600.

The previous prime is 46312729181. The next prime is 46312729219. The reversal of 46312729209 is 90292721364.

46312729209 is a `hidden beast` number, since 4 + 631 + 2 + 7 + 2 + 9 + 2 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22536014400 + 23776714809 = 150120^2 + 154197^2 .

It is not a de Polignac number, because 46312729209 - 2⁹ = 46312728697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (46312729219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 476262 + ... + 565199.

Almost surely, 2^46312729209 is an apocalyptic number.

It is an amenable number.

46312729209 is a deficient number, since it is larger than the sum of its proper divisors (24262984683).

46312729209 is an equidigital number, since it uses as much as digits as its factorization.

46312729209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041540 (or 1041525 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 46312729209 in words is "forty-six billion, three hundred twelve million, seven hundred twenty-nine thousand, two hundred nine".