12786540351 has 32 divisors (see below), whose sum is σ = 19420972032. Its totient is φ = 7423384320.

The previous prime is 12786540331. The next prime is 12786540359. The reversal of 12786540351 is 15304568721.

It is a happy number.

It is not a de Polignac number, because 12786540351 - 2⁷ = 12786540223 is a prime.

It is a super-2 number, since 2×12786540351² (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 (12786540359) 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, 32155 + ... + 163116.

It is an arithmetic number, because the mean of its divisors is an integer number (606905376).

Almost surely, 2^12786540351 is an apocalyptic number.

12786540351 is a deficient number, since it is larger than the sum of its proper divisors (6634431681).

12786540351 is a wasteful number, since it uses less digits than its factorization.

12786540351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195383.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 12786540351 in words is "twelve billion, seven hundred eighty-six million, five hundred forty thousand, three hundred fifty-one".