21024551134 has 16 divisors (see below), whose sum is σ = 33404023728. Its totient is φ = 9890324352.

The previous prime is 21024551123. The next prime is 21024551179. The reversal of 21024551134 is 43115542012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15444 + ... + 205639.

It is an arithmetic number, because the mean of its divisors is an integer number (2087751483).

Almost surely, 2^21024551134 is an apocalyptic number.

21024551134 is a deficient number, since it is larger than the sum of its proper divisors (12379472594).

21024551134 is a wasteful number, since it uses less digits than its factorization.

21024551134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223899.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 21024551134 in words is "twenty-one billion, twenty-four million, five hundred fifty-one thousand, one hundred thirty-four".