380206636864 has 56 divisors (see below), whose sum is σ = 770835542400. Its totient is φ = 185983620096.

The previous prime is 380206636801. The next prime is 380206636871. The reversal of 380206636864 is 468636602083.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7847787 + ... + 7896085.

It is an arithmetic number, because the mean of its divisors is an integer number (13764920400).

Almost surely, 2^380206636864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380206636864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385417771200).

380206636864 is an abundant number, since it is smaller than the sum of its proper divisors (390628905536).

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

380206636864 is a wasteful number, since it uses less digits than its factorization.

380206636864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50975 (or 50965 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 380206636864 in words is "three hundred eighty billion, two hundred six million, six hundred thirty-six thousand, eight hundred sixty-four".