12867859381 has 32 divisors (see below), whose sum is σ = 14991701760. Its totient is φ = 10945718784.

The previous prime is 12867859363. The next prime is 12867859391. The reversal of 12867859381 is 18395876821.

It is not a de Polignac number, because 12867859381 - 2¹⁷ = 12867728309 is a prime.

It is a super-2 number, since 2×12867859381² (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 (12867859391) 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, 4741681 + ... + 4744393.

It is an arithmetic number, because the mean of its divisors is an integer number (468490680).

Almost surely, 2^12867859381 is an apocalyptic number.

It is an amenable number.

12867859381 is a deficient number, since it is larger than the sum of its proper divisors (2123842379).

12867859381 is a wasteful number, since it uses less digits than its factorization.

12867859381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its digits is 5806080, while the sum is 58.

The spelling of 12867859381 in words is "twelve billion, eight hundred sixty-seven million, eight hundred fifty-nine thousand, three hundred eighty-one".