378832644578 has 4 divisors (see below), whose sum is σ = 568248966870. Its totient is φ = 189416322288.

The previous prime is 378832644577. The next prime is 378832644583. The reversal of 378832644578 is 875446238873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 194210320249 + 184622324329 = 440693^2 + 429677^2 .

It is a super-2 number, since 2×378832644578² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378832644577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94708161143 + ... + 94708161146.

Almost surely, 2^378832644578 is an apocalyptic number.

378832644578 is a deficient number, since it is larger than the sum of its proper divisors (189416322292).

378832644578 is a wasteful number, since it uses less digits than its factorization.

378832644578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189416322291.

The product of its digits is 216760320, while the sum is 65.

The spelling of 378832644578 in words is "three hundred seventy-eight billion, eight hundred thirty-two million, six hundred forty-four thousand, five hundred seventy-eight".