4279661568009 has 24 divisors (see below), whose sum is σ = 6189590376320. Its totient is φ = 2849482123488.

The previous prime is 4279661567981. The next prime is 4279661568043. The reversal of 4279661568009 is 9008651669724.

4279661568009 is a `hidden beast` number, since 4 + 2 + 7 + 9 + 6 + 61 + 568 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 4279661568009 - 2⁹ = 4279661567497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4279661568059) 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, 90251184 + ... + 90298590.

Almost surely, 2^{4279661568009} is an apocalyptic number.

It is an amenable number.

4279661568009 is a deficient number, since it is larger than the sum of its proper divisors (1909928808311).

4279661568009 is a wasteful number, since it uses less digits than its factorization.

4279661568009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59949 (or 59946 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 4279661568009 in words is "four trillion, two hundred seventy-nine billion, six hundred sixty-one million, five hundred sixty-eight thousand, nine".