21524035134 has 32 divisors (see below), whose sum is σ = 50784823296. Its totient is φ = 5951345760.

The previous prime is 21524035111. The next prime is 21524035171. The reversal of 21524035134 is 43153042512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8264457 + ... + 8267060.

It is an arithmetic number, because the mean of its divisors is an integer number (1587025728).

Almost surely, 2^21524035134 is an apocalyptic number.

21524035134 is an abundant number, since it is smaller than the sum of its proper divisors (29260788162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21524035134 is a wasteful number, since it uses less digits than its factorization.

21524035134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16531560.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21524035134 its reverse (43153042512), we get a palindrome (64677077646).

The spelling of 21524035134 in words is "twenty-one billion, five hundred twenty-four million, thirty-five thousand, one hundred thirty-four".