665263526552 has 64 divisors (see below), whose sum is σ = 1296295086240. Its totient is φ = 319850675200.

The previous prime is 665263526527. The next prime is 665263526563. The reversal of 665263526552 is 255625362566.

665263526552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665263526494 and 665263526503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6865802 + ... + 6962022.

Almost surely, 2^665263526552 is an apocalyptic number.

It is an amenable number.

665263526552 is a deficient number, since it is larger than the sum of its proper divisors (631031559688).

665263526552 is a wasteful number, since it uses less digits than its factorization.

665263526552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96572 (or 96568 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 53.

The spelling of 665263526552 in words is "six hundred sixty-five billion, two hundred sixty-three million, five hundred twenty-six thousand, five hundred fifty-two".