20400024001450 has 96 divisors (see below), whose sum is σ = 40319652220848. Its totient is φ = 7652585472000.

The previous prime is 20400024001447. The next prime is 20400024001477. The reversal of 20400024001450 is 5410042000402.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 54845424481 + 20345178576969 = 234191^2 + 4510563^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 492959760 + ... + 493001140.

Almost surely, 2^{20400024001450} is an apocalyptic number.

20400024001450 is a deficient number, since it is larger than the sum of its proper divisors (19919628219398).

20400024001450 is a wasteful number, since it uses less digits than its factorization.

20400024001450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43468 (or 43463 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 20400024001450 its reverse (5410042000402), we get a palindrome (25810066001852).

The spelling of 20400024001450 in words is "twenty trillion, four hundred billion, twenty-four million, one thousand, four hundred fifty".