21464846412 has 12 divisors (see below), whose sum is σ = 50084641656. Its totient is φ = 7154948800.

The previous prime is 21464846341. The next prime is 21464846413.

21464846412 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (21464846413) 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 3 ways as a sum of consecutive naturals, for example, 894368589 + ... + 894368612.

It is an arithmetic number, because the mean of its divisors is an integer number (4173720138).

Almost surely, 2^21464846412 is an apocalyptic number.

It is an amenable number.

21464846412 is an abundant number, since it is smaller than the sum of its proper divisors (28619795244).

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

21464846412 is a wasteful number, since it uses less digits than its factorization.

21464846412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788737208 (or 1788737206 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The spelling of 21464846412 in words is "twenty-one billion, four hundred sixty-four million, eight hundred forty-six thousand, four hundred twelve".