2145131632426 has 16 divisors (see below), whose sum is σ = 3236114302344. Its totient is φ = 1066433880064.

The previous prime is 2145131632361. The next prime is 2145131632429. The reversal of 2145131632426 is 6242361315412.

It can be written as a sum of positive squares in 4 ways, for example, as 2095357576225 + 49774056201 = 1447535^2 + 223101^2 .

It is not an unprimeable number, because it can be changed into a prime (2145131632429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141015 + ... + 2364778.

Almost surely, 2^{2145131632426} is an apocalyptic number.

2145131632426 is a deficient number, since it is larger than the sum of its proper divisors (1090982669918).

2145131632426 is a wasteful number, since it uses less digits than its factorization.

2145131632426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507545.

The product of its digits is 207360, while the sum is 40.

Adding to 2145131632426 its reverse (6242361315412), we get a palindrome (8387492947838).

The spelling of 2145131632426 in words is "two trillion, one hundred forty-five billion, one hundred thirty-one million, six hundred thirty-two thousand, four hundred twenty-six".