363603801997 has 8 divisors (see below), whose sum is σ = 385003787256. Its totient is φ = 342205097472.

The previous prime is 363603801991. The next prime is 363603802019. The reversal of 363603801997 is 799108306363.

It can be written as a sum of positive squares in 4 ways, for example, as 277250690116 + 86353111881 = 526546^2 + 293859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 363603801997 - 2¹⁵ = 363603769229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363603801991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298503 + ... + 903499.

It is an arithmetic number, because the mean of its divisors is an integer number (48125473407).

Almost surely, 2^363603801997 is an apocalyptic number.

It is an amenable number.

363603801997 is a deficient number, since it is larger than the sum of its proper divisors (21399985259).

363603801997 is a wasteful number, since it uses less digits than its factorization.

363603801997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640367.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 363603801997 in words is "three hundred sixty-three billion, six hundred three million, eight hundred one thousand, nine hundred ninety-seven".