640140005319599 has 2 divisors, whose sum is σ = 640140005319600. Its totient is φ = 640140005319598.

The previous prime is 640140005319541. The next prime is 640140005319637. The reversal of 640140005319599 is 995913500041046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 640140005319599 - 2⁴⁰ = 639040493691823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640140005319499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320070002659799 + 320070002659800.

It is an arithmetic number, because the mean of its divisors is an integer number (320070002659800).

Almost surely, 2^{640140005319599} is an apocalyptic number.

640140005319599 is a deficient number, since it is larger than the sum of its proper divisors (1).

640140005319599 is an equidigital number, since it uses as much as digits as its factorization.

640140005319599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5248800, while the sum is 56.

The spelling of 640140005319599 in words is "six hundred forty trillion, one hundred forty billion, five million, three hundred nineteen thousand, five hundred ninety-nine".