440640143297687 has 2 divisors, whose sum is σ = 440640143297688. Its totient is φ = 440640143297686.

The previous prime is 440640143297647. The next prime is 440640143297713. The reversal of 440640143297687 is 786792341046044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440640143297687 - 2⁶ = 440640143297623 is a prime.

It is a super-2 number, since 2×440640143297687² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440640143297647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220320071648843 + 220320071648844.

It is an arithmetic number, because the mean of its divisors is an integer number (220320071648844).

Almost surely, 2^{440640143297687} is an apocalyptic number.

440640143297687 is a deficient number, since it is larger than the sum of its proper divisors (1).

440640143297687 is an equidigital number, since it uses as much as digits as its factorization.

440640143297687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 195084288, while the sum is 65.

The spelling of 440640143297687 in words is "four hundred forty trillion, six hundred forty billion, one hundred forty-three million, two hundred ninety-seven thousand, six hundred eighty-seven".