640201182205 has 16 divisors (see below), whose sum is σ = 841359576960. Its totient is φ = 464750998848.

The previous prime is 640201182193. The next prime is 640201182223. The reversal of 640201182205 is 502281102046.

It is a cyclic number.

It is not a de Polignac number, because 640201182205 - 2¹⁹ = 640200657917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83464377 + ... + 83472046.

It is an arithmetic number, because the mean of its divisors is an integer number (52584973560).

Almost surely, 2^640201182205 is an apocalyptic number.

640201182205 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

640201182205 is a deficient number, since it is larger than the sum of its proper divisors (201158394755).

640201182205 is a wasteful number, since it uses less digits than its factorization.

640201182205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166936500.

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 640201182205 in words is "six hundred forty billion, two hundred one million, one hundred eighty-two thousand, two hundred five".