665061134036 has 24 divisors (see below), whose sum is σ = 1253474121480. Its totient is φ = 306929331072.

The previous prime is 665061134033. The next prime is 665061134041. The reversal of 665061134036 is 630431160566.

It can be written as a sum of positive squares in 4 ways, for example, as 328306080400 + 336755053636 = 572980^2 + 580306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 665061133984 and 665061134002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665061134033) 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, 287810 + ... + 1188678.

It is an arithmetic number, because the mean of its divisors is an integer number (52228088395).

Almost surely, 2^665061134036 is an apocalyptic number.

It is an amenable number.

665061134036 is a deficient number, since it is larger than the sum of its proper divisors (588412987444).

665061134036 is a wasteful number, since it uses less digits than its factorization.

665061134036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915083 (or 915081 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 665061134036 in words is "six hundred sixty-five billion, sixty-one million, one hundred thirty-four thousand, thirty-six".