240226173555691 has 2 divisors, whose sum is σ = 240226173555692. Its totient is φ = 240226173555690.

The previous prime is 240226173555689. The next prime is 240226173555707. The reversal of 240226173555691 is 196555371622042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240226173555691 - 2¹ = 240226173555689 is a prime.

It is a super-2 number, since 2×240226173555691² (a number of 30 digits) contains 22 as substring.

Together with 240226173555689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240226173555671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120113086777845 + 120113086777846.

It is an arithmetic number, because the mean of its divisors is an integer number (120113086777846).

Almost surely, 2^{240226173555691} is an apocalyptic number.

240226173555691 is a deficient number, since it is larger than the sum of its proper divisors (1).

240226173555691 is an equidigital number, since it uses as much as digits as its factorization.

240226173555691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216000, while the sum is 58.

The spelling of 240226173555691 in words is "two hundred forty trillion, two hundred twenty-six billion, one hundred seventy-three million, five hundred fifty-five thousand, six hundred ninety-one".