378838129845 has 48 divisors (see below), whose sum is σ = 716661952128. Its totient is φ = 170344056960.

The previous prime is 378838129829. The next prime is 378838129913. The reversal of 378838129845 is 548921838873.

It is not a de Polignac number, because 378838129845 - 2⁴ = 378838129829 is a prime.

It is a super-3 number, since 3×378838129845³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4179969 + ... + 4269638.

It is an arithmetic number, because the mean of its divisors is an integer number (14930457336).

Almost surely, 2^378838129845 is an apocalyptic number.

378838129845 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

378838129845 is a deficient number, since it is larger than the sum of its proper divisors (337823822283).

378838129845 is a wasteful number, since it uses less digits than its factorization.

378838129845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449690 (or 8449683 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 66.

The spelling of 378838129845 in words is "three hundred seventy-eight billion, eight hundred thirty-eight million, one hundred twenty-nine thousand, eight hundred forty-five".