999999950945617 has 2 divisors, whose sum is σ = 999999950945618. Its totient is φ = 999999950945616.

The previous prime is 999999950945609. The next prime is 999999950945651. The reversal of 999999950945617 is 716549059999999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 776090506276801 + 223909444668816 = 27858401^2 + 14963604^2 .

It is a cyclic number.

It is not a de Polignac number, because 999999950945617 - 2³ = 999999950945609 is a prime.

It is not a weakly prime, because it can be changed into another prime (999999950945117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999975472808 + 499999975472809.

It is an arithmetic number, because the mean of its divisors is an integer number (499999975472809).

Almost surely, 2^{999999950945617} is an apocalyptic number.

It is an amenable number.

999999950945617 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999950945617 is an equidigital number, since it uses as much as digits as its factorization.

999999950945617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180796228200, while the sum is 100.

The spelling of 999999950945617 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred fifty million, nine hundred forty-five thousand, six hundred seventeen".