65630403656 has 16 divisors (see below), whose sum is σ = 123087133500. Its totient is φ = 32807168064.

The previous prime is 65630403613. The next prime is 65630403691.

65630403656 is nontrivially palindromic in base 10.

65630403656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 65042341156 + 588062500 = 255034^2 + 24250^2 .

It is a super-3 number, since 3×65630403656³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969431 + ... + 1034918.

Almost surely, 2^65630403656 is an apocalyptic number.

It is an amenable number.

65630403656 is a deficient number, since it is larger than the sum of its proper divisors (57456729844).

65630403656 is a wasteful number, since it uses less digits than its factorization.

65630403656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008448 (or 2008444 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 65630403656 in words is "sixty-five billion, six hundred thirty million, four hundred three thousand, six hundred fifty-six".