378790992171 has 48 divisors (see below), whose sum is σ = 592335244800. Its totient is φ = 232444033344.

The previous prime is 378790992169. The next prime is 378790992193. The reversal of 378790992171 is 171299097873.

It is a happy number.

378790992171 is a `hidden beast` number, since 378 + 7 + 9 + 0 + 9 + 92 + 171 = 666.

378790992171 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 378790992171 - 2¹ = 378790992169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378790992099 and 378790992108.

It is not an unprimeable number, because it can be changed into a prime (378790992101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4507480 + ... + 4590746.

It is an arithmetic number, because the mean of its divisors is an integer number (12340317600).

Almost surely, 2^378790992171 is an apocalyptic number.

378790992171 is a deficient number, since it is larger than the sum of its proper divisors (213544252629).

378790992171 is a wasteful number, since it uses less digits than its factorization.

378790992171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84048 (or 84045 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 63.

The spelling of 378790992171 in words is "three hundred seventy-eight billion, seven hundred ninety million, nine hundred ninety-two thousand, one hundred seventy-one".