640033670063 has 8 divisors (see below), whose sum is σ = 661743506400. Its totient is φ = 618556024800.

The previous prime is 640033670047. The next prime is 640033670083. The reversal of 640033670063 is 360076330046.

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

It is not a de Polignac number, because 640033670063 - 2⁴ = 640033670047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 640033669999 and 640033670026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640033670083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58042163 + ... + 58053188.

It is an arithmetic number, because the mean of its divisors is an integer number (82717938300).

Almost surely, 2^640033670063 is an apocalyptic number.

640033670063 is a deficient number, since it is larger than the sum of its proper divisors (21709836337).

640033670063 is a wasteful number, since it uses less digits than its factorization.

640033670063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116095537.

The product of its (nonzero) digits is 163296, while the sum is 38.

The spelling of 640033670063 in words is "six hundred forty billion, thirty-three million, six hundred seventy thousand, sixty-three".