640140005320622 has 8 divisors (see below), whose sum is σ = 993320697911400. Its totient is φ = 309033106016824.

The previous prime is 640140005320577. The next prime is 640140005320637. The reversal of 640140005320622 is 226023500041046.

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, 5518448321672 + ... + 5518448321787.

It is an arithmetic number, because the mean of its divisors is an integer number (124165087238925).

Almost surely, 2^{640140005320622} is an apocalyptic number.

640140005320622 is a deficient number, since it is larger than the sum of its proper divisors (353180692590778).

640140005320622 is a wasteful number, since it uses less digits than its factorization.

640140005320622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036896643490.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 640140005320622 its reverse (226023500041046), we get a palindrome (866163505361668).

The spelling of 640140005320622 in words is "six hundred forty trillion, one hundred forty billion, five million, three hundred twenty thousand, six hundred twenty-two".