665131535348 has 24 divisors (see below), whose sum is σ = 1346290341312. Its totient is φ = 281621957184.

The previous prime is 665131535329. The next prime is 665131535389. The reversal of 665131535348 is 843535131566.

It is a super-2 number, since 2×665131535348² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665131535296 and 665131535305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143098265 + ... + 143102912.

It is an arithmetic number, because the mean of its divisors is an integer number (56095430888).

Almost surely, 2^665131535348 is an apocalyptic number.

It is an amenable number.

665131535348 is an abundant number, since it is smaller than the sum of its proper divisors (681158805964).

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

665131535348 is a wasteful number, since it uses less digits than its factorization.

665131535348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286201271 (or 286201269 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 50.

The spelling of 665131535348 in words is "six hundred sixty-five billion, one hundred thirty-one million, five hundred thirty-five thousand, three hundred forty-eight".