378833783129 has 16 divisors (see below), whose sum is σ = 405966330000. Its totient is φ = 352839674880.

The previous prime is 378833783113. The next prime is 378833783131. The reversal of 378833783129 is 921387338873.

It can be written as a sum of positive squares in 8 ways, for example, as 8050216729 + 370783566400 = 89723^2 + 608920^2 .

It is a cyclic number.

It is not a de Polignac number, because 378833783129 - 2⁴ = 378833783113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378833783429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1684154 + ... + 1895795.

It is an arithmetic number, because the mean of its divisors is an integer number (25372895625).

Almost surely, 2^378833783129 is an apocalyptic number.

It is an amenable number.

378833783129 is a deficient number, since it is larger than the sum of its proper divisors (27132546871).

378833783129 is a wasteful number, since it uses less digits than its factorization.

378833783129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580108.

The product of its digits is 36578304, while the sum is 62.

The spelling of 378833783129 in words is "three hundred seventy-eight billion, eight hundred thirty-three million, seven hundred eighty-three thousand, one hundred twenty-nine".