640463506341 has 16 divisors (see below), whose sum is σ = 854758500288. Its totient is φ = 426572265600.

The previous prime is 640463506303. The next prime is 640463506357. The reversal of 640463506341 is 143605364046.

640463506341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 640463506341 - 2⁷ = 640463506213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640463506293 and 640463506302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640463506301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16669545 + ... + 16707921.

It is an arithmetic number, because the mean of its divisors is an integer number (53422406268).

Almost surely, 2^640463506341 is an apocalyptic number.

It is an amenable number.

640463506341 is a deficient number, since it is larger than the sum of its proper divisors (214294993947).

640463506341 is a wasteful number, since it uses less digits than its factorization.

640463506341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43492.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 640463506341 in words is "six hundred forty billion, four hundred sixty-three million, five hundred six thousand, three hundred forty-one".