240261041389 has 2 divisors, whose sum is σ = 240261041390. Its totient is φ = 240261041388.

The previous prime is 240261041347. The next prime is 240261041453. The reversal of 240261041389 is 983140162042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204186496900 + 36074544489 = 451870^2 + 189933^2 .

It is a cyclic number.

It is not a de Polignac number, because 240261041389 - 2⁷ = 240261041261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240261041689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120130520694 + 120130520695.

It is an arithmetic number, because the mean of its divisors is an integer number (120130520695).

Almost surely, 2^240261041389 is an apocalyptic number.

It is an amenable number.

240261041389 is a deficient number, since it is larger than the sum of its proper divisors (1).

240261041389 is an equidigital number, since it uses as much as digits as its factorization.

240261041389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 240261041389 in words is "two hundred forty billion, two hundred sixty-one million, forty-one thousand, three hundred eighty-nine".