640033602269 has 2 divisors, whose sum is σ = 640033602270. Its totient is φ = 640033602268.

The previous prime is 640033602251. The next prime is 640033602287. The reversal of 640033602269 is 962206330046.

It is a balanced prime because it is at equal distance from previous prime (640033602251) and next prime (640033602287).

It can be written as a sum of positive squares in only one way, i.e., 545699851225 + 94333751044 = 738715^2 + 307138^2 .

It is a cyclic number.

It is not a de Polignac number, because 640033602269 - 2¹² = 640033598173 is a prime.

It is a super-2 number, since 2×640033602269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640033002269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320016801134 + 320016801135.

It is an arithmetic number, because the mean of its divisors is an integer number (320016801135).

Almost surely, 2^640033602269 is an apocalyptic number.

It is an amenable number.

640033602269 is a deficient number, since it is larger than the sum of its proper divisors (1).

640033602269 is an equidigital number, since it uses as much as digits as its factorization.

640033602269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 640033602269 in words is "six hundred forty billion, thirty-three million, six hundred two thousand, two hundred sixty-nine".