12285772381 has 16 divisors (see below), whose sum is σ = 13783858560. Its totient is φ = 10881907200.

The previous prime is 12285772361. The next prime is 12285772403. The reversal of 12285772381 is 18327758221.

It is a cyclic number.

It is not a de Polignac number, because 12285772381 - 2¹¹ = 12285770333 is a prime.

It is a super-2 number, since 2×12285772381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12285772321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77176 + ... + 174721.

It is an arithmetic number, because the mean of its divisors is an integer number (861491160).

Almost surely, 2^12285772381 is an apocalyptic number.

It is an amenable number.

12285772381 is a deficient number, since it is larger than the sum of its proper divisors (1498086179).

12285772381 is a wasteful number, since it uses less digits than its factorization.

12285772381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252084.

The product of its digits is 376320, while the sum is 46.

The spelling of 12285772381 in words is "twelve billion, two hundred eighty-five million, seven hundred seventy-two thousand, three hundred eighty-one".