665001201013503 has 8 divisors (see below), whose sum is σ = 933335018966400. Its totient is φ = 420000758534808.

The previous prime is 665001201013481. The next prime is 665001201013517. The reversal of 665001201013503 is 305310102100566.

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

It is not a de Polignac number, because 665001201013503 - 2¹³ = 665001201005311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665001201012503) 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, 5833343868483 + ... + 5833343868596.

It is an arithmetic number, because the mean of its divisors is an integer number (116666877370800).

Almost surely, 2^{665001201013503} is an apocalyptic number.

665001201013503 is a deficient number, since it is larger than the sum of its proper divisors (268333817952897).

665001201013503 is a wasteful number, since it uses less digits than its factorization.

665001201013503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11666687737101.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 665001201013503 in words is "six hundred sixty-five trillion, one billion, two hundred one million, thirteen thousand, five hundred three".