665223635003100 has 72 divisors (see below), whose sum is σ = 1924753152913920. Its totient is φ = 177389334713280.

The previous prime is 665223635003047. The next prime is 665223635003107. The reversal of 665223635003100 is 1300536322566.

It is a super-2 number, since 2×665223635003100² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665223635003107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8034252 + ... + 37349651.

It is an arithmetic number, because the mean of its divisors is an integer number (26732682679360).

Almost surely, 2^{665223635003100} is an apocalyptic number.

665223635003100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665223635003100 is an abundant number, since it is smaller than the sum of its proper divisors (1259529517910820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665223635003100 is a wasteful number, since it uses less digits than its factorization.

665223635003100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45432779 (or 45432772 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 665223635003100 in words is "six hundred sixty-five trillion, two hundred twenty-three billion, six hundred thirty-five million, three thousand, one hundred".