378423887864 has 16 divisors (see below), whose sum is σ = 774048861720. Its totient is φ = 172010858080.

The previous prime is 378423887857. The next prime is 378423887893. The reversal of 378423887864 is 468788324873.

It is a super-2 number, since 2×378423887864² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 378423887794 and 378423887803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2150135639 + ... + 2150135814.

Almost surely, 2^378423887864 is an apocalyptic number.

It is an amenable number.

378423887864 is an abundant number, since it is smaller than the sum of its proper divisors (395624973856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378423887864 is a wasteful number, since it uses less digits than its factorization.

378423887864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300271470 (or 4300271466 counting only the distinct ones).

The product of its digits is 346816512, while the sum is 68.

The spelling of 378423887864 in words is "three hundred seventy-eight billion, four hundred twenty-three million, eight hundred eighty-seven thousand, eight hundred sixty-four".