21422452145434 has 8 divisors (see below), whose sum is σ = 32154184718208. Its totient is φ = 10704390572700.

The previous prime is 21422452145377. The next prime is 21422452145443. The reversal of 21422452145434 is 43454125422412.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3417746092 + ... + 3417752359.

It is an arithmetic number, because the mean of its divisors is an integer number (4019273089776).

Almost surely, 2^{21422452145434} is an apocalyptic number.

21422452145434 is a deficient number, since it is larger than the sum of its proper divisors (10731732572774).

21422452145434 is a wasteful number, since it uses less digits than its factorization.

21422452145434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6835500020.

The product of its digits is 1228800, while the sum is 43.

Adding to 21422452145434 its reverse (43454125422412), we get a palindrome (64876577567846).

The spelling of 21422452145434 in words is "twenty-one trillion, four hundred twenty-two billion, four hundred fifty-two million, one hundred forty-five thousand, four hundred thirty-four".