21434154182 has 24 divisors (see below), whose sum is σ = 39368858040. Its totient is φ = 8702588160.

The previous prime is 21434154173. The next prime is 21434154187. The reversal of 21434154182 is 28145143412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434154187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5753819 + ... + 5757542.

It is an arithmetic number, because the mean of its divisors is an integer number (1640369085).

Almost surely, 2^21434154182 is an apocalyptic number.

21434154182 is a deficient number, since it is larger than the sum of its proper divisors (17934703858).

21434154182 is a wasteful number, since it uses less digits than its factorization.

21434154182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11511396 (or 11511389 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

Adding to 21434154182 its reverse (28145143412), we get a palindrome (49579297594).

It can be divided in two parts, 21434 and 154182, that added together give a cube (175616 = 56³).

The spelling of 21434154182 in words is "twenty-one billion, four hundred thirty-four million, one hundred fifty-four thousand, one hundred eighty-two".