380231323640 has 128 divisors (see below), whose sum is σ = 1022918492160. Its totient is φ = 124370594304.

The previous prime is 380231323621. The next prime is 380231323673. The reversal of 380231323640 is 46323132083.

It is a Cunningham number, because it is equal to 616629²-1.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 380231323640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2389442 + ... + 2543598.

It is an arithmetic number, because the mean of its divisors is an integer number (7991550720).

Almost surely, 2^380231323640 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 380231323640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511459246080).

380231323640 is an abundant number, since it is smaller than the sum of its proper divisors (642687168520).

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

380231323640 is a wasteful number, since it uses less digits than its factorization.

380231323640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154581 (or 154577 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 380231323640 in words is "three hundred eighty billion, two hundred thirty-one million, three hundred twenty-three thousand, six hundred forty".