378155383605 has 12 divisors (see below), whose sum is σ = 655469331660. Its totient is φ = 201682871232.

The previous prime is 378155383583. The next prime is 378155383657. The reversal of 378155383605 is 506383551873.

378155383605 is a `hidden beast` number, since 3 + 7 + 8 + 1 + 553 + 83 + 6 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45846946161 + 332308437444 = 214119^2 + 576462^2 .

It is not a de Polignac number, because 378155383605 - 2¹⁶ = 378155318069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4201726440 + ... + 4201726529.

It is an arithmetic number, because the mean of its divisors is an integer number (54622444305).

Almost surely, 2^378155383605 is an apocalyptic number.

It is an amenable number.

378155383605 is a deficient number, since it is larger than the sum of its proper divisors (277313948055).

378155383605 is a wasteful number, since it uses less digits than its factorization.

378155383605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8403452980 (or 8403452977 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 378155383605 in words is "three hundred seventy-eight billion, one hundred fifty-five million, three hundred eighty-three thousand, six hundred five".