12767496381 has 24 divisors (see below), whose sum is σ = 18643089920. Its totient is φ = 8419316256.

The previous prime is 12767496377. The next prime is 12767496419. The reversal of 12767496381 is 18369476721.

12767496381 is a `hidden beast` number, since 1 + 2 + 76 + 7 + 496 + 3 + 81 = 666.

It is not a de Polignac number, because 12767496381 - 2² = 12767496377 is a prime.

It is a super-2 number, since 2×12767496381² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12767496341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294840 + ... + 335358.

Almost surely, 2^12767496381 is an apocalyptic number.

It is an amenable number.

12767496381 is a deficient number, since it is larger than the sum of its proper divisors (5875593539).

12767496381 is a wasteful number, since it uses less digits than its factorization.

12767496381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40905 (or 40902 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 12767496381 in words is "twelve billion, seven hundred sixty-seven million, four hundred ninety-six thousand, three hundred eighty-one".