12541640313402 has 24 divisors (see below), whose sum is σ = 27174765776340. Its totient is φ = 4180360345920.

The previous prime is 12541640313401. The next prime is 12541640313409. The reversal of 12541640313402 is 20431304614521.

12541640313402 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 1 + 640 + 3 + 1 + 3 + 4 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7738350040521 + 4803290272881 = 2781789^2 + 2191641^2 .

It is a super-3 number, since 3×12541640313402³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12541640313401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15120277 + ... + 15928152.

Almost surely, 2^{12541640313402} is an apocalyptic number.

12541640313402 is an abundant number, since it is smaller than the sum of its proper divisors (14633125462938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12541640313402 is a wasteful number, since it uses less digits than its factorization.

12541640313402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31070878 (or 31070875 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12541640313402 its reverse (20431304614521), we get a palindrome (32972944927923).

The spelling of 12541640313402 in words is "twelve trillion, five hundred forty-one billion, six hundred forty million, three hundred thirteen thousand, four hundred two".