90950203017 has 6 divisors (see below), whose sum is σ = 131372515482. Its totient is φ = 60633468672.

The previous prime is 90950203009. The next prime is 90950203021. The reversal of 90950203017 is 71030205909.

It can be written as a sum of positive squares in only one way, i.e., 46879178256 + 44071024761 = 216516^2 + 209931^2 .

It is not a de Polignac number, because 90950203017 - 2³ = 90950203009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90950203087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5052789048 + ... + 5052789065.

It is an arithmetic number, because the mean of its divisors is an integer number (21895419247).

Almost surely, 2^90950203017 is an apocalyptic number.

It is an amenable number.

90950203017 is a deficient number, since it is larger than the sum of its proper divisors (40422312465).

90950203017 is a wasteful number, since it uses less digits than its factorization.

90950203017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105578119 (or 10105578116 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The spelling of 90950203017 in words is "ninety billion, nine hundred fifty million, two hundred three thousand, seventeen".