240861097951 has 2 divisors, whose sum is σ = 240861097952. Its totient is φ = 240861097950.

The previous prime is 240861097949. The next prime is 240861098029. The reversal of 240861097951 is 159790168042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240861097951 - 2¹ = 240861097949 is a prime.

It is a super-2 number, since 2×240861097951² (a number of 24 digits) contains 22 as substring.

Together with 240861097949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240861097931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120430548975 + 120430548976.

It is an arithmetic number, because the mean of its divisors is an integer number (120430548976).

Almost surely, 2^240861097951 is an apocalyptic number.

240861097951 is a deficient number, since it is larger than the sum of its proper divisors (1).

240861097951 is an equidigital number, since it uses as much as digits as its factorization.

240861097951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 240861097951 in words is "two hundred forty billion, eight hundred sixty-one million, ninety-seven thousand, nine hundred fifty-one".