12640380753 has 64 divisors (see below), whose sum is σ = 23960143872. Its totient is φ = 5704750080.

The previous prime is 12640380689. The next prime is 12640380757. The reversal of 12640380753 is 35708304621.

It is not a de Polignac number, because 12640380753 - 2⁶ = 12640380689 is a prime.

It is a super-3 number, since 3×12640380753³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12640380757) 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 63 ways as a sum of consecutive naturals, for example, 72751 + ... + 174852.

It is an arithmetic number, because the mean of its divisors is an integer number (374377248).

Almost surely, 2^12640380753 is an apocalyptic number.

12640380753 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12640380753 is a deficient number, since it is larger than the sum of its proper divisors (11319763119).

12640380753 is a wasteful number, since it uses less digits than its factorization.

12640380753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247654.

The product of its (nonzero) digits is 120960, while the sum is 39.

It can be divided in two parts, 12640 and 380753, that added together give a palindrome (393393).

The spelling of 12640380753 in words is "twelve billion, six hundred forty million, three hundred eighty thousand, seven hundred fifty-three".