378230690646 has 64 divisors (see below), whose sum is σ = 853529564160. Its totient is φ = 124129272960.

The previous prime is 378230690587. The next prime is 378230690647. The reversal of 378230690646 is 646096032873.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 378230690592 and 378230690601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378230690647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2719470 + ... + 2855166.

It is an arithmetic number, because the mean of its divisors is an integer number (13336399440).

Almost surely, 2^378230690646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378230690646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426764782080).

378230690646 is an abundant number, since it is smaller than the sum of its proper divisors (475298873514).

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

378230690646 is a wasteful number, since it uses less digits than its factorization.

378230690646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136506 (or 136500 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 378230690646 in words is "three hundred seventy-eight billion, two hundred thirty million, six hundred ninety thousand, six hundred forty-six".