378475378816 has 16 divisors (see below), whose sum is σ = 753993918990. Its totient is φ = 189237689344.

The previous prime is 378475378793. The next prime is 378475378847. The reversal of 378475378816 is 618873574873.

It can be written as a sum of positive squares in only one way, i.e., 376946881600 + 1528497216 = 613960^2 + 39096^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×378475378816² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478419321 + ... + 1478419576.

Almost surely, 2^378475378816 is an apocalyptic number.

It is an amenable number.

378475378816 is a deficient number, since it is larger than the sum of its proper divisors (375518540174).

378475378816 is an equidigital number, since it uses as much as digits as its factorization.

378475378816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956838911 (or 2956838899 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 67.

The spelling of 378475378816 in words is "three hundred seventy-eight billion, four hundred seventy-five million, three hundred seventy-eight thousand, eight hundred sixteen".