378651406122 has 192 divisors, whose sum is σ = 967180870656. Its totient is φ = 105905479680.

The previous prime is 378651406121. The next prime is 378651406129. The reversal of 378651406122 is 221604156873.

378651406122 is a `hidden beast` number, since 3 + 7 + 8 + 6 + 514 + 0 + 6 + 122 = 666.

It is not an unprimeable number, because it can be changed into a prime (378651406121) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 16241578 + ... + 16264874.

It is an arithmetic number, because the mean of its divisors is an integer number (5037400368).

Almost surely, 2^378651406122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378651406122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483590435328).

378651406122 is an abundant number, since it is smaller than the sum of its proper divisors (588529464534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378651406122 is a wasteful number, since it uses less digits than its factorization.

378651406122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23465 (or 23462 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 378651406122 in words is "three hundred seventy-eight billion, six hundred fifty-one million, four hundred six thousand, one hundred twenty-two".