21435053412 has 48 divisors (see below), whose sum is σ = 52213633920. Its totient is φ = 6831230208.

The previous prime is 21435053383. The next prime is 21435053413.

21435053412 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 21435053412.

It is not an unprimeable number, because it can be changed into a prime (21435053413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627264 + ... + 660552.

It is an arithmetic number, because the mean of its divisors is an integer number (1087784040).

Almost surely, 2^21435053412 is an apocalyptic number.

It is an amenable number.

21435053412 is an abundant number, since it is smaller than the sum of its proper divisors (30778580508).

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

21435053412 is a wasteful number, since it uses less digits than its factorization.

21435053412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35652 (or 35650 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, 214350 and 53412, that added together give a palindrome (267762).

The spelling of 21435053412 in words is "twenty-one billion, four hundred thirty-five million, fifty-three thousand, four hundred twelve".