640504051303042 has 8 divisors (see below), whose sum is σ = 962728882042176. Its totient is φ = 319594423955652.

The previous prime is 640504051303033. The next prime is 640504051303159. The reversal of 640504051303042 is 240303150405046.

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

It is a junction number, because it is equal to n+sod(n) for n = 640504051302992 and 640504051303010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328800846718 + ... + 328800848665.

It is an arithmetic number, because the mean of its divisors is an integer number (120341110255272).

Almost surely, 2^{640504051303042} is an apocalyptic number.

640504051303042 is a deficient number, since it is larger than the sum of its proper divisors (322224830739134).

640504051303042 is a wasteful number, since it uses less digits than its factorization.

640504051303042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657601695872.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 640504051303042 in words is "six hundred forty trillion, five hundred four billion, fifty-one million, three hundred three thousand, forty-two".