240918268691 has 2 divisors, whose sum is σ = 240918268692. Its totient is φ = 240918268690.

The previous prime is 240918268649. The next prime is 240918268753. The reversal of 240918268691 is 196862819042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240918268691 - 2¹⁴ = 240918252307 is a prime.

It is a super-2 number, since 2×240918268691² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240918268601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120459134345 + 120459134346.

It is an arithmetic number, because the mean of its divisors is an integer number (120459134346).

Almost surely, 2^240918268691 is an apocalyptic number.

240918268691 is a deficient number, since it is larger than the sum of its proper divisors (1).

240918268691 is an equidigital number, since it uses as much as digits as its factorization.

240918268691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 240918268691 in words is "two hundred forty billion, nine hundred eighteen million, two hundred sixty-eight thousand, six hundred ninety-one".