640610214133606 has 4 divisors (see below), whose sum is σ = 960915321200412. Its totient is φ = 320305107066802.

The previous prime is 640610214133577. The next prime is 640610214133619. The reversal of 640610214133606 is 606331412016046.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160152553533400 + ... + 160152553533403.

It is an arithmetic number, because the mean of its divisors is an integer number (240228830300103).

Almost surely, 2^{640610214133606} is an apocalyptic number.

640610214133606 is a deficient number, since it is larger than the sum of its proper divisors (320305107066806).

640610214133606 is a wasteful number, since it uses less digits than its factorization.

640610214133606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320305107066805.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 640610214133606 in words is "six hundred forty trillion, six hundred ten billion, two hundred fourteen million, one hundred thirty-three thousand, six hundred six".