960566407821 has 10 divisors (see below), whose sum is σ = 1434920189582. Its totient is φ = 640377605160.

The previous prime is 960566407817. The next prime is 960566407901. The reversal of 960566407821 is 128704665069.

960566407821 is a `hidden beast` number, since 9 + 6 + 0 + 566 + 4 + 0 + 78 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 797959877796 + 162606530025 = 893286^2 + 403245^2 .

It is not a de Polignac number, because 960566407821 - 2² = 960566407817 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 (960566402821) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5929422190 + ... + 5929422351.

Almost surely, 2^960566407821 is an apocalyptic number.

It is an amenable number.

960566407821 is a deficient number, since it is larger than the sum of its proper divisors (474353781761).

960566407821 is a wasteful number, since it uses less digits than its factorization.

960566407821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858844553 (or 11858844544 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 960566407821 in words is "nine hundred sixty billion, five hundred sixty-six million, four hundred seven thousand, eight hundred twenty-one".