21453035412 has 24 divisors (see below), whose sum is σ = 50118076512. Its totient is φ = 7142298400.

The previous prime is 21453035393. The next prime is 21453035449.

21453035412 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 21453035412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078914 + ... + 1098617.

It is an arithmetic number, because the mean of its divisors is an integer number (2088253188).

Almost surely, 2^21453035412 is an apocalyptic number.

It is an amenable number.

21453035412 is an abundant number, since it is smaller than the sum of its proper divisors (28665041100).

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

21453035412 is a wasteful number, since it uses less digits than its factorization.

21453035412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178359 (or 2178357 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

It can be divided in two parts, 214530 and 35412, that added together give a palindrome (249942).

The spelling of 21453035412 in words is "twenty-one billion, four hundred fifty-three million, thirty-five thousand, four hundred twelve".