4178216648849 has 16 divisors (see below), whose sum is σ = 4349847051264. Its totient is φ = 4010575842000.

The previous prime is 4178216648807. The next prime is 4178216648857. The reversal of 4178216648849 is 9488466128714.

It is a cyclic number.

It is not a de Polignac number, because 4178216648849 - 2¹⁶ = 4178216583313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4178216648869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3020477 + ... + 4180874.

It is an arithmetic number, because the mean of its divisors is an integer number (271865440704).

Almost surely, 2^{4178216648849} is an apocalyptic number.

It is an amenable number.

4178216648849 is a deficient number, since it is larger than the sum of its proper divisors (171630402415).

4178216648849 is a wasteful number, since it uses less digits than its factorization.

4178216648849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201628.

The product of its digits is 148635648, while the sum is 68.

The spelling of 4178216648849 in words is "four trillion, one hundred seventy-eight billion, two hundred sixteen million, six hundred forty-eight thousand, eight hundred forty-nine".