4866378644169 has 81 divisors (see below), whose sum is σ = 8296151439303. Its totient is φ = 2740788840384.

The previous prime is 4866378644129. The next prime is 4866378644201. The reversal of 4866378644169 is 9614468736684.

The square root of 4866378644169 is 2205987.

It is a perfect power (a square), and thus also a powerful number.

4866378644169 is a `hidden beast` number, since 4 + 86 + 6 + 3 + 78 + 64 + 416 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2762393582025 + 2103985062144 = 1662045^2 + 1450512^2 .

It is not a de Polignac number, because 4866378644169 - 2¹³ = 4866378635977 is a prime.

It is a super-2 number, since 2×4866378644169² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4866378644097 and 4866378644106.

It is not an unprimeable number, because it can be changed into a prime (4866378644129) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3381777352 + ... + 3381778790.

Almost surely, 2^{4866378644169} is an apocalyptic number.

4866378644169 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4866378644169 is the 2205987-th square number.

4866378644169 is the 1102994-th centered octagonal number.

It is an amenable number.

4866378644169 is a deficient number, since it is larger than the sum of its proper divisors (3429772795134).

4866378644169 is an frugal number, since it uses more digits than its factorization.

4866378644169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044 (or 1522 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 72.

The spelling of 4866378644169 in words is "four trillion, eight hundred sixty-six billion, three hundred seventy-eight million, six hundred forty-four thousand, one hundred sixty-nine".