21024424443154 has 16 divisors (see below), whose sum is σ = 34409835241056. Its totient is φ = 9554825563200.

The previous prime is 21024424443109. The next prime is 21024424443167. The reversal of 21024424443154 is 45134442442012.

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, 86425872 + ... + 86668795.

It is an arithmetic number, because the mean of its divisors is an integer number (2150614702566).

Almost surely, 2^{21024424443154} is an apocalyptic number.

21024424443154 is a deficient number, since it is larger than the sum of its proper divisors (13385410797902).

21024424443154 is a wasteful number, since it uses less digits than its factorization.

21024424443154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173100201.

The product of its (nonzero) digits is 491520, while the sum is 40.

Adding to 21024424443154 its reverse (45134442442012), we get a palindrome (66158866885166).

The spelling of 21024424443154 in words is "twenty-one trillion, twenty-four billion, four hundred twenty-four million, four hundred forty-three thousand, one hundred fifty-four".