378438659519 has 16 divisors (see below), whose sum is σ = 381789147168. Its totient is φ = 375106486272.

The previous prime is 378438659507. The next prime is 378438659603. The reversal of 378438659519 is 915956834873.

It is a cyclic number.

It is not a de Polignac number, because 378438659519 - 2¹⁶ = 378438593983 is a prime.

It is a super-2 number, since 2×378438659519² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378438658519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61005872 + ... + 61012074.

It is an arithmetic number, because the mean of its divisors is an integer number (23861821698).

Almost surely, 2^378438659519 is an apocalyptic number.

378438659519 is a deficient number, since it is larger than the sum of its proper divisors (3350487649).

378438659519 is a wasteful number, since it uses less digits than its factorization.

378438659519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594.

The product of its digits is 195955200, while the sum is 68.

The spelling of 378438659519 in words is "three hundred seventy-eight billion, four hundred thirty-eight million, six hundred fifty-nine thousand, five hundred nineteen".