21422452145436 has 36 divisors (see below), whose sum is σ = 54151486052664. Its totient is φ = 7140779460000.

The previous prime is 21422452145377. The next prime is 21422452145443. The reversal of 21422452145436 is 63454125422412.

21422452145436 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 24 + 52 + 145 + 436 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 21422452145391 and 21422452145400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5760111 + ... + 8719161.

Almost surely, 2^{21422452145436} is an apocalyptic number.

It is an amenable number.

21422452145436 is an abundant number, since it is smaller than the sum of its proper divisors (32729033907228).

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

21422452145436 is a wasteful number, since it uses less digits than its factorization.

21422452145436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160162 (or 3160157 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 45.

Adding to 21422452145436 its reverse (63454125422412), we get a palindrome (84876577567848).

The spelling of 21422452145436 in words is "twenty-one trillion, four hundred twenty-two billion, four hundred fifty-two million, one hundred forty-five thousand, four hundred thirty-six".