640033670047 has 2 divisors, whose sum is σ = 640033670048. Its totient is φ = 640033670046.

The previous prime is 640033670011. The next prime is 640033670083. The reversal of 640033670047 is 740076330046.

It is a balanced prime because it is at equal distance from previous prime (640033670011) and next prime (640033670083).

It is a cyclic number.

It is not a de Polignac number, because 640033670047 - 2²⁷ = 639899452319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640033669991 and 640033670009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640033670347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320016835023 + 320016835024.

It is an arithmetic number, because the mean of its divisors is an integer number (320016835024).

Almost surely, 2^640033670047 is an apocalyptic number.

640033670047 is a deficient number, since it is larger than the sum of its proper divisors (1).

640033670047 is an equidigital number, since it uses as much as digits as its factorization.

640033670047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 640033670047 in words is "six hundred forty billion, thirty-three million, six hundred seventy thousand, forty-seven".