249440196601 has 2 divisors, whose sum is σ = 249440196602. Its totient is φ = 249440196600.

The previous prime is 249440196569. The next prime is 249440196653. The reversal of 249440196601 is 106691044942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207160612201 + 42279584400 = 455149^2 + 205620^2 .

It is a cyclic number.

It is not a de Polignac number, because 249440196601 - 2⁵ = 249440196569 is a prime.

It is not a weakly prime, because it can be changed into another prime (249440196661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124720098300 + 124720098301.

It is an arithmetic number, because the mean of its divisors is an integer number (124720098301).

Almost surely, 2^249440196601 is an apocalyptic number.

It is an amenable number.

249440196601 is a deficient number, since it is larger than the sum of its proper divisors (1).

249440196601 is an equidigital number, since it uses as much as digits as its factorization.

249440196601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 249440196601 in words is "two hundred forty-nine billion, four hundred forty million, one hundred ninety-six thousand, six hundred one".