4899678561 has 24 divisors (see below), whose sum is σ = 7466888000. Its totient is φ = 3087437472.

The previous prime is 4899678551. The next prime is 4899678571. The reversal of 4899678561 is 1658769984.

4899678561 is a `hidden beast` number, since 4 + 8 + 9 + 9 + 67 + 8 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (4899678551) and next prime (4899678571).

It is not a de Polignac number, because 4899678561 - 2¹⁰ = 4899677537 is a prime.

It is a super-2 number, since 2×4899678561² = 48013700002246061442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4899678551) 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, 42435 + ... + 107703.

Almost surely, 2^4899678561 is an apocalyptic number.

It is an amenable number.

4899678561 is a deficient number, since it is larger than the sum of its proper divisors (2567209439).

4899678561 is a wasteful number, since it uses less digits than its factorization.

4899678561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65733 (or 65730 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 4899678561 is about 69997.7039694875. The cubic root of 4899678561 is about 1698.4621110282.

The spelling of 4899678561 in words is "four billion, eight hundred ninety-nine million, six hundred seventy-eight thousand, five hundred sixty-one".