12640404151 has 16 divisors (see below), whose sum is σ = 13361644800. Its totient is φ = 11924877888.

The previous prime is 12640404121. The next prime is 12640404187. The reversal of 12640404151 is 15140404621.

It is not a de Polignac number, because 12640404151 - 2⁹ = 12640403639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640404121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5913955 + ... + 5916091.

It is an arithmetic number, because the mean of its divisors is an integer number (835102800).

Almost surely, 2^12640404151 is an apocalyptic number.

12640404151 is a deficient number, since it is larger than the sum of its proper divisors (721240649).

12640404151 is a wasteful number, since it uses less digits than its factorization.

12640404151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 12640404151 its reverse (15140404621), we get a palindrome (27780808772).

The spelling of 12640404151 in words is "twelve billion, six hundred forty million, four hundred four thousand, one hundred fifty-one".