21434055043412 has 72 divisors (see below), whose sum is σ = 41726651366400. Its totient is φ = 9625923014400.

The previous prime is 21434055043327. The next prime is 21434055043421.

21434055043412 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14090339 + ... + 15537237.

Almost surely, 2^{21434055043412} is an apocalyptic number.

21434055043412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21434055043412 is a deficient number, since it is larger than the sum of its proper divisors (20292596322988).

21434055043412 is a wasteful number, since it uses less digits than its factorization.

21434055043412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447293 (or 1447280 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

It can be divided in two parts, 2143405 and 5043412, that added together give a palindrome (7186817).

The spelling of 21434055043412 in words is "twenty-one trillion, four hundred thirty-four billion, fifty-five million, forty-three thousand, four hundred twelve".