378815612443 has 2 divisors, whose sum is σ = 378815612444. Its totient is φ = 378815612442.

The previous prime is 378815612369. The next prime is 378815612453. The reversal of 378815612443 is 344216518873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378815612443 - 2²¹ = 378813515291 is a prime.

It is a super-3 number, since 3×378815612443³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (378815612453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189407806221 + 189407806222.

It is an arithmetic number, because the mean of its divisors is an integer number (189407806222).

Almost surely, 2^378815612443 is an apocalyptic number.

378815612443 is a deficient number, since it is larger than the sum of its proper divisors (1).

378815612443 is an equidigital number, since it uses as much as digits as its factorization.

378815612443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 52.

The spelling of 378815612443 in words is "three hundred seventy-eight billion, eight hundred fifteen million, six hundred twelve thousand, four hundred forty-three".