640411577752 has 32 divisors (see below), whose sum is σ = 1244826161280. Its totient is φ = 308546599680.

The previous prime is 640411577723. The next prime is 640411577809. The reversal of 640411577752 is 257775114046.

It is a junction number, because it is equal to n+sod(n) for n = 640411577696 and 640411577705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5483643 + ... + 5599210.

It is an arithmetic number, because the mean of its divisors is an integer number (38900817540).

Almost surely, 2^640411577752 is an apocalyptic number.

640411577752 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

640411577752 is a deficient number, since it is larger than the sum of its proper divisors (604414583528).

640411577752 is a wasteful number, since it uses less digits than its factorization.

640411577752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11083123 (or 11083119 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 640411577752 in words is "six hundred forty billion, four hundred eleven million, five hundred seventy-seven thousand, seven hundred fifty-two".