983663820401 has 16 divisors (see below), whose sum is σ = 992539920384. Its totient is φ = 974827645824.

The previous prime is 983663820397. The next prime is 983663820421. The reversal of 983663820401 is 104028366389.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 983663820401 - 2² = 983663820397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 983663820401.

It is not an unprimeable number, because it can be changed into a prime (983663820421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141592010 + ... + 141598956.

It is an arithmetic number, because the mean of its divisors is an integer number (62033745024).

Almost surely, 2^983663820401 is an apocalyptic number.

It is an amenable number.

983663820401 is a deficient number, since it is larger than the sum of its proper divisors (8876099983).

983663820401 is a wasteful number, since it uses less digits than its factorization.

983663820401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 983663820401 in words is "nine hundred eighty-three billion, six hundred sixty-three million, eight hundred twenty thousand, four hundred one".