983655209288061 has 24 divisors (see below), whose sum is σ = 1440425675559416. Its totient is φ = 646730011445760.

The previous prime is 983655209288033. The next prime is 983655209288119. The reversal of 983655209288061 is 160882902556389.

983655209288061 is a `hidden beast` number, since 9 + 8 + 3 + 6 + 5 + 520 + 92 + 8 + 8 + 0 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 382629043540836 + 601026165747225 = 19560906^2 + 24515835^2 .

It is not a de Polignac number, because 983655209288061 - 2²⁶ = 983655142179197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983655209288261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58479250 + ... + 73397091.

Almost surely, 2^{983655209288061} is an apocalyptic number.

It is an amenable number.

983655209288061 is a deficient number, since it is larger than the sum of its proper divisors (456770466271355).

983655209288061 is a wasteful number, since it uses less digits than its factorization.

983655209288061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131887773 (or 131887770 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 72.

The spelling of 983655209288061 in words is "nine hundred eighty-three trillion, six hundred fifty-five billion, two hundred nine million, two hundred eighty-eight thousand, sixty-one".