640322553612262 has 8 divisors (see below), whose sum is σ = 965512541572992. Its totient is φ = 318485039754600.

The previous prime is 640322553612221. The next prime is 640322553612277. The reversal of 640322553612262 is 262216355223046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838118525289 + ... + 838118526052.

It is an arithmetic number, because the mean of its divisors is an integer number (120689067696624).

Almost surely, 2^{640322553612262} is an apocalyptic number.

640322553612262 is a deficient number, since it is larger than the sum of its proper divisors (325189987960730).

640322553612262 is a wasteful number, since it uses less digits than its factorization.

640322553612262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676237051534.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 640322553612262 in words is "six hundred forty trillion, three hundred twenty-two billion, five hundred fifty-three million, six hundred twelve thousand, two hundred sixty-two".