8961216485 has 16 divisors (see below), whose sum is σ = 11979984240. Its totient is φ = 6389322240.

The previous prime is 8961216479. The next prime is 8961216499. The reversal of 8961216485 is 5846121698.

It can be written as a sum of positive squares in 8 ways, for example, as 1079521 + 8960136964 = 1039^2 + 94658^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8961216485 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2375096 + ... + 2378865.

It is an arithmetic number, because the mean of its divisors is an integer number (748749015).

Almost surely, 2^8961216485 is an apocalyptic number.

It is an amenable number.

8961216485 is a deficient number, since it is larger than the sum of its proper divisors (3018767755).

8961216485 is a wasteful number, since it uses less digits than its factorization.

8961216485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754008.

The product of its digits is 829440, while the sum is 50.

The square root of 8961216485 is about 94663.7020457155. The cubic root of 8961216485 is about 2077.0916333795.

The spelling of 8961216485 in words is "eight billion, nine hundred sixty-one million, two hundred sixteen thousand, four hundred eighty-five".