640462614163 has 4 divisors (see below), whose sum is σ = 640464330888. Its totient is φ = 640460897440.

The previous prime is 640462614133. The next prime is 640462614193. The reversal of 640462614163 is 361416264046.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (640462614133) and next prime (640462614193).

It is a cyclic number.

It is not a de Polignac number, because 640462614163 - 2²⁵ = 640429059731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640462614133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36358 + ... + 1132363.

It is an arithmetic number, because the mean of its divisors is an integer number (160116082722).

Almost surely, 2^640462614163 is an apocalyptic number.

640462614163 is a deficient number, since it is larger than the sum of its proper divisors (1716725).

640462614163 is a wasteful number, since it uses less digits than its factorization.

640462614163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716724.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 640462614163 in words is "six hundred forty billion, four hundred sixty-two million, six hundred fourteen thousand, one hundred sixty-three".