12540475373 has 8 divisors (see below), whose sum is σ = 12847817976. Its totient is φ = 12233203200.

The previous prime is 12540475369. The next prime is 12540475393. The reversal of 12540475373 is 37357404521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 825010729 + 11715464644 = 28723^2 + 108238^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12540475373 - 2² = 12540475369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12540475373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540475393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635333 + ... + 654773.

It is an arithmetic number, because the mean of its divisors is an integer number (1605977247).

Almost surely, 2^12540475373 is an apocalyptic number.

It is an amenable number.

12540475373 is a deficient number, since it is larger than the sum of its proper divisors (307342603).

12540475373 is a wasteful number, since it uses less digits than its factorization.

12540475373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35215.

The product of its (nonzero) digits is 352800, while the sum is 41.

Adding to 12540475373 its reverse (37357404521), we get a palindrome (49897879894).

The spelling of 12540475373 in words is "twelve billion, five hundred forty million, four hundred seventy-five thousand, three hundred seventy-three".