378877910129 has 8 divisors (see below), whose sum is σ = 389481896040. Its totient is φ = 368293084416.

The previous prime is 378877910119. The next prime is 378877910161. The reversal of 378877910129 is 921019778873.

It can be written as a sum of positive squares in 4 ways, for example, as 171998484529 + 206879425600 = 414727^2 + 454840^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378877910129 - 2⁸ = 378877909873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378877910119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4749944 + ... + 4829049.

It is an arithmetic number, because the mean of its divisors is an integer number (48685237005).

Almost surely, 2^378877910129 is an apocalyptic number.

It is an amenable number.

378877910129 is a deficient number, since it is larger than the sum of its proper divisors (10603985911).

378877910129 is a wasteful number, since it uses less digits than its factorization.

378877910129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580099.

The product of its (nonzero) digits is 10668672, while the sum is 62.

The spelling of 378877910129 in words is "three hundred seventy-eight billion, eight hundred seventy-seven million, nine hundred ten thousand, one hundred twenty-nine".