249890299601 has 2 divisors, whose sum is σ = 249890299602. Its totient is φ = 249890299600.

The previous prime is 249890299591. The next prime is 249890299621. The reversal of 249890299601 is 106992098942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246364315201 + 3525984400 = 496351^2 + 59380^2 .

It is a cyclic number.

It is not a de Polignac number, because 249890299601 - 2⁶ = 249890299537 is a prime.

It is not a weakly prime, because it can be changed into another prime (249890299621) 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, 124945149800 + 124945149801.

It is an arithmetic number, because the mean of its divisors is an integer number (124945149801).

Almost surely, 2^249890299601 is an apocalyptic number.

It is an amenable number.

249890299601 is a deficient number, since it is larger than the sum of its proper divisors (1).

249890299601 is an equidigital number, since it uses as much as digits as its factorization.

249890299601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 249890299601 in words is "two hundred forty-nine billion, eight hundred ninety million, two hundred ninety-nine thousand, six hundred one".