240485181787693 has 2 divisors, whose sum is σ = 240485181787694. Its totient is φ = 240485181787692.

The previous prime is 240485181787691. The next prime is 240485181787699. The reversal of 240485181787693 is 396787181584042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168777175496329 + 71708006291364 = 12991427^2 + 8468058^2 .

It is a cyclic number.

It is not a de Polignac number, because 240485181787693 - 2¹ = 240485181787691 is a prime.

Together with 240485181787691, 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 (240485181787691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120242590893846 + 120242590893847.

It is an arithmetic number, because the mean of its divisors is an integer number (120242590893847).

It is a 1-persistent number, because it is pandigital, but 2⋅240485181787693 = 480970363575386 is not.

Almost surely, 2^{240485181787693} is an apocalyptic number.

It is an amenable number.

240485181787693 is a deficient number, since it is larger than the sum of its proper divisors (1).

240485181787693 is an equidigital number, since it uses as much as digits as its factorization.

240485181787693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 650280960, while the sum is 73.

The spelling of 240485181787693 in words is "two hundred forty trillion, four hundred eighty-five billion, one hundred eighty-one million, seven hundred eighty-seven thousand, six hundred ninety-three".