4378306836861 has 12 divisors (see below), whose sum is σ = 6348828853692. Its totient is φ = 2907513747456.

The previous prime is 4378306836851. The next prime is 4378306836863. The reversal of 4378306836861 is 1686386038734.

4378306836861 is a `hidden beast` number, since 437 + 8 + 3 + 0 + 6 + 83 + 68 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3920126764761 + 458180072100 = 1979931^2 + 676890^2 .

It is not a de Polignac number, because 4378306836861 - 2⁵ = 4378306836829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378306836863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 946453986 + ... + 946458611.

It is an arithmetic number, because the mean of its divisors is an integer number (529069071141).

Almost surely, 2^{4378306836861} is an apocalyptic number.

It is an amenable number.

4378306836861 is a deficient number, since it is larger than the sum of its proper divisors (1970522016831).

4378306836861 is a wasteful number, since it uses less digits than its factorization.

4378306836861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892912860 (or 1892912857 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 63.

The spelling of 4378306836861 in words is "four trillion, three hundred seventy-eight billion, three hundred six million, eight hundred thirty-six thousand, eight hundred sixty-one".