378853138033 has 2 divisors, whose sum is σ = 378853138034. Its totient is φ = 378853138032.

The previous prime is 378853138021. The next prime is 378853138099. The reversal of 378853138033 is 330831358873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247096479744 + 131756658289 = 497088^2 + 362983^2 .

It is a cyclic number.

It is not a de Polignac number, because 378853138033 - 2²¹ = 378851040881 is a prime.

It is a super-2 number, since 2×378853138033² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378853138933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189426569016 + 189426569017.

It is an arithmetic number, because the mean of its divisors is an integer number (189426569017).

Almost surely, 2^378853138033 is an apocalyptic number.

It is an amenable number.

378853138033 is a deficient number, since it is larger than the sum of its proper divisors (1).

378853138033 is an equidigital number, since it uses as much as digits as its factorization.

378853138033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 378853138033 in words is "three hundred seventy-eight billion, eight hundred fifty-three million, one hundred thirty-eight thousand, thirty-three".