380612721916 has 24 divisors (see below), whose sum is σ = 761270874336. Its totient is φ = 163110002880.

The previous prime is 380612721889. The next prime is 380612721917. The reversal of 380612721916 is 619127216083.

It is a super-2 number, since 2×380612721916² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380612721917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82206 + ... + 876346.

It is an arithmetic number, because the mean of its divisors is an integer number (31719619764).

Almost surely, 2^380612721916 is an apocalyptic number.

It is an amenable number.

380612721916 is an abundant number, since it is smaller than the sum of its proper divisors (380658152420).

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

380612721916 is a wasteful number, since it uses less digits than its factorization.

380612721916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811269 (or 811267 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

Adding to 380612721916 its reverse (619127216083), we get a palindrome (999739937999).

The spelling of 380612721916 in words is "three hundred eighty billion, six hundred twelve million, seven hundred twenty-one thousand, nine hundred sixteen".