661614467576 has 16 divisors (see below), whose sum is σ = 1240647336600. Its totient is φ = 330775177824.

The previous prime is 661614467557. The next prime is 661614467597. The reversal of 661614467576 is 675764416166.

661614467576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 3919166 + ... + 4084493.

Almost surely, 2^661614467576 is an apocalyptic number.

It is an amenable number.

661614467576 is a deficient number, since it is larger than the sum of its proper divisors (579032869024).

661614467576 is a wasteful number, since it uses less digits than its factorization.

661614467576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8013998 (or 8013994 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 59.

The spelling of 661614467576 in words is "six hundred sixty-one billion, six hundred fourteen million, four hundred sixty-seven thousand, five hundred seventy-six".