983661655205 has 8 divisors (see below), whose sum is σ = 1199744707704. Its totient is φ = 774028843200.

The previous prime is 983661655201. The next prime is 983661655211. The reversal of 983661655205 is 502556166389.

983661655205 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 4 ways, for example, as 14616326404 + 969045328801 = 120898^2 + 984401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 983661655205 - 2² = 983661655201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983661655201) 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, 1612559786 + ... + 1612560395.

It is an arithmetic number, because the mean of its divisors is an integer number (149968088463).

Almost surely, 2^983661655205 is an apocalyptic number.

It is an amenable number.

983661655205 is a deficient number, since it is larger than the sum of its proper divisors (216083052499).

983661655205 is a wasteful number, since it uses less digits than its factorization.

983661655205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225120247.

The product of its (nonzero) digits is 11664000, while the sum is 56.

It can be divided in two parts, 98366 and 1655205, that added together give a palindrome (1753571).

The spelling of 983661655205 in words is "nine hundred eighty-three billion, six hundred sixty-one million, six hundred fifty-five thousand, two hundred five".