640106604111 has 16 divisors (see below), whose sum is σ = 967502560640. Its totient is φ = 373179558240.

The previous prime is 640106604089. The next prime is 640106604119. The reversal of 640106604111 is 111406601046.

It is not a de Polignac number, because 640106604111 - 2⁶ = 640106604047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640106604119) 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 15 ways as a sum of consecutive naturals, for example, 431920045 + ... + 431921526.

It is an arithmetic number, because the mean of its divisors is an integer number (60468910040).

Almost surely, 2^640106604111 is an apocalyptic number.

640106604111 is a deficient number, since it is larger than the sum of its proper divisors (327395956529).

640106604111 is a wasteful number, since it uses less digits than its factorization.

640106604111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863841606.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 640106604111 in words is "six hundred forty billion, one hundred six million, six hundred four thousand, one hundred eleven".