9212305568661 has 64 divisors (see below), whose sum is σ = 14721862176000. Its totient is φ = 5659795918080.

The previous prime is 9212305568611. The next prime is 9212305568677. The reversal of 9212305568661 is 1668655032129.

9212305568661 is a `hidden beast` number, since 9 + 2 + 1 + 2 + 3 + 0 + 556 + 86 + 6 + 1 = 666.

It is not a de Polignac number, because 9212305568661 - 2⁶ = 9212305568597 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9212305568598 and 9212305568607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9212305568611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 869982955 + ... + 869993543.

It is an arithmetic number, because the mean of its divisors is an integer number (230029096500).

Almost surely, 2^{9212305568661} is an apocalyptic number.

It is an amenable number.

9212305568661 is a deficient number, since it is larger than the sum of its proper divisors (5509556607339).

9212305568661 is a wasteful number, since it uses less digits than its factorization.

9212305568661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14451 (or 14445 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 9212305568661 in words is "nine trillion, two hundred twelve billion, three hundred five million, five hundred sixty-eight thousand, six hundred sixty-one".