21436361422 has 16 divisors (see below), whose sum is σ = 38345789952. Its totient is φ = 8787576600.

The previous prime is 21436361407. The next prime is 21436361423. The reversal of 21436361422 is 22416363412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21436361423) 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, 33285954 + ... + 33286597.

It is an arithmetic number, because the mean of its divisors is an integer number (2396611872).

Almost surely, 2^21436361422 is an apocalyptic number.

21436361422 is a deficient number, since it is larger than the sum of its proper divisors (16909428530).

21436361422 is a wasteful number, since it uses less digits than its factorization.

21436361422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66572583.

The product of its digits is 41472, while the sum is 34.

The spelling of 21436361422 in words is "twenty-one billion, four hundred thirty-six million, three hundred sixty-one thousand, four hundred twenty-two".