640033635038 has 8 divisors (see below), whose sum is σ = 1097200517232. Its totient is φ = 274300129296.

The previous prime is 640033635037. The next prime is 640033635047. The reversal of 640033635038 is 830536330046.

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

It is a super-2 number, since 2×640033635038² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 640033634986 and 640033635004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640033635037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22858344095 + ... + 22858344122.

It is an arithmetic number, because the mean of its divisors is an integer number (137150064654).

Almost surely, 2^640033635038 is an apocalyptic number.

640033635038 is a deficient number, since it is larger than the sum of its proper divisors (457166882194).

640033635038 is a wasteful number, since it uses less digits than its factorization.

640033635038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45716688226.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 640033635038 in words is "six hundred forty billion, thirty-three million, six hundred thirty-five thousand, thirty-eight".