240955361989 has 2 divisors, whose sum is σ = 240955361990. Its totient is φ = 240955361988.

The previous prime is 240955361971. The next prime is 240955362013. The reversal of 240955361989 is 989163559042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226547440900 + 14407921089 = 475970^2 + 120033^2 .

It is a cyclic number.

It is not a de Polignac number, because 240955361989 - 2⁹ = 240955361477 is a prime.

It is a super-2 number, since 2×240955361989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240955361389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120477680994 + 120477680995.

It is an arithmetic number, because the mean of its divisors is an integer number (120477680995).

Almost surely, 2^240955361989 is an apocalyptic number.

It is an amenable number.

240955361989 is a deficient number, since it is larger than the sum of its proper divisors (1).

240955361989 is an equidigital number, since it uses as much as digits as its factorization.

240955361989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 240955361989 in words is "two hundred forty billion, nine hundred fifty-five million, three hundred sixty-one thousand, nine hundred eighty-nine".