640161354110 has 16 divisors (see below), whose sum is σ = 1155330788400. Its totient is φ = 255388908096.

The previous prime is 640161354109. The next prime is 640161354113. The reversal of 640161354110 is 11453161046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640161354113) 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 7 ways as a sum of consecutive naturals, for example, 84450215 + ... + 84457794.

It is an arithmetic number, because the mean of its divisors is an integer number (72208174275).

Almost surely, 2^640161354110 is an apocalyptic number.

640161354110 is a deficient number, since it is larger than the sum of its proper divisors (515169434290).

640161354110 is a wasteful number, since it uses less digits than its factorization.

640161354110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168908395.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 640161354110 in words is "six hundred forty billion, one hundred sixty-one million, three hundred fifty-four thousand, one hundred ten".