378775165279 has 16 divisors (see below), whose sum is σ = 440847051840. Its totient is φ = 318714485760.

The previous prime is 378775165277. The next prime is 378775165291. The reversal of 378775165279 is 972561577873.

It is a cyclic number.

It is not a de Polignac number, because 378775165279 - 2¹ = 378775165277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378775165277) 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, 654034 + ... + 1088719.

It is an arithmetic number, because the mean of its divisors is an integer number (27552940740).

Almost surely, 2^378775165279 is an apocalyptic number.

378775165279 is a deficient number, since it is larger than the sum of its proper divisors (62071886561).

378775165279 is a wasteful number, since it uses less digits than its factorization.

378775165279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743330.

The product of its digits is 155584800, while the sum is 67.

The spelling of 378775165279 in words is "three hundred seventy-eight billion, seven hundred seventy-five million, one hundred sixty-five thousand, two hundred seventy-nine".