378106084665 has 24 divisors (see below), whose sum is σ = 655399792320. Its totient is φ = 201651682464.

The previous prime is 378106084661. The next prime is 378106084669. The reversal of 378106084665 is 566480601873.

378106084665 is a `hidden beast` number, since 3 + 78 + 106 + 0 + 8 + 466 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (378106084661) and next prime (378106084669).

It is not a de Polignac number, because 378106084665 - 2² = 378106084661 is a prime.

It is a super-2 number, since 2×378106084665² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378106084661) 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, 2503284 + ... + 2650026.

It is an arithmetic number, because the mean of its divisors is an integer number (27308324680).

Almost surely, 2^378106084665 is an apocalyptic number.

It is an amenable number.

378106084665 is a deficient number, since it is larger than the sum of its proper divisors (277293707655).

378106084665 is a wasteful number, since it uses less digits than its factorization.

378106084665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204013 (or 204010 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 378106084665 in words is "three hundred seventy-eight billion, one hundred six million, eighty-four thousand, six hundred sixty-five".