101246644409 has 2 divisors, whose sum is σ = 101246644410. Its totient is φ = 101246644408.

The previous prime is 101246644403. The next prime is 101246644423. The reversal of 101246644409 is 904446642101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92870734009 + 8375910400 = 304747^2 + 91520^2 .

It is a cyclic number.

It is not a de Polignac number, because 101246644409 - 2⁴ = 101246644393 is a prime.

It is a super-4 number, since 4×101246644409⁴ (a number of 45 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (101246644403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50623322204 + 50623322205.

It is an arithmetic number, because the mean of its divisors is an integer number (50623322205).

Almost surely, 2^101246644409 is an apocalyptic number.

It is an amenable number.

101246644409 is a deficient number, since it is larger than the sum of its proper divisors (1).

101246644409 is an equidigital number, since it uses as much as digits as its factorization.

101246644409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 101246644409 in words is "one hundred one billion, two hundred forty-six million, six hundred forty-four thousand, four hundred nine".