240164933489639 has 2 divisors, whose sum is σ = 240164933489640. Its totient is φ = 240164933489638.

The previous prime is 240164933489573. The next prime is 240164933489693. The reversal of 240164933489639 is 936984339461042.

Together with next prime (240164933489693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240164933489639 - 2²⁸ = 240164665054183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240164933419639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120082466744819 + 120082466744820.

It is an arithmetic number, because the mean of its divisors is an integer number (120082466744820).

Almost surely, 2^{240164933489639} is an apocalyptic number.

240164933489639 is a deficient number, since it is larger than the sum of its proper divisors (1).

240164933489639 is an equidigital number, since it uses as much as digits as its factorization.

240164933489639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725594112, while the sum is 71.

The spelling of 240164933489639 in words is "two hundred forty trillion, one hundred sixty-four billion, nine hundred thirty-three million, four hundred eighty-nine thousand, six hundred thirty-nine".