21424882754 has 16 divisors (see below), whose sum is σ = 35653119840. Its totient is φ = 9573521760.

The previous prime is 21424882753. The next prime is 21424882783. The reversal of 21424882754 is 45728842412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21424882699 and 21424882708.

It is not an unprimeable number, because it can be changed into a prime (21424882753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8251739 + ... + 8254334.

It is an arithmetic number, because the mean of its divisors is an integer number (2228319990).

Almost surely, 2^21424882754 is an apocalyptic number.

21424882754 is a deficient number, since it is larger than the sum of its proper divisors (14228237086).

21424882754 is a wasteful number, since it uses less digits than its factorization.

21424882754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16506145.

The product of its digits is 1146880, while the sum is 47.

The spelling of 21424882754 in words is "twenty-one billion, four hundred twenty-four million, eight hundred eighty-two thousand, seven hundred fifty-four".