450177643209 has 32 divisors (see below), whose sum is σ = 700300339200. Its totient is φ = 257128361616.

The previous prime is 450177643199. The next prime is 450177643213. The reversal of 450177643209 is 902346771054.

It is not a de Polignac number, because 450177643209 - 2⁷ = 450177643081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450177643109) 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 in 31 ways as a sum of consecutive naturals, for example, 2210524 + ... + 2405570.

It is an arithmetic number, because the mean of its divisors is an integer number (21884385600).

Almost surely, 2^450177643209 is an apocalyptic number.

450177643209 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

450177643209 is a deficient number, since it is larger than the sum of its proper divisors (250122695991).

450177643209 is a wasteful number, since it uses less digits than its factorization.

450177643209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197314 (or 197300 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 450177643209 in words is "four hundred fifty billion, one hundred seventy-seven million, six hundred forty-three thousand, two hundred nine".