1660620923636 has 24 divisors (see below), whose sum is σ = 3059830966080. Its totient is φ = 786406145472.

The previous prime is 1660620923587. The next prime is 1660620923639. The reversal of 1660620923636 is 6363290260661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660620923639) 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, 2534561 + ... + 3121736.

It is an arithmetic number, because the mean of its divisors is an integer number (127492956920).

Almost surely, 2^{1660620923636} is an apocalyptic number.

It is an amenable number.

1660620923636 is a deficient number, since it is larger than the sum of its proper divisors (1399210042444).

1660620923636 is a wasteful number, since it uses less digits than its factorization.

1660620923636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660183 (or 5660181 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 50.

The spelling of 1660620923636 in words is "one trillion, six hundred sixty billion, six hundred twenty million, nine hundred twenty-three thousand, six hundred thirty-six".