21350534134 has 16 divisors (see below), whose sum is σ = 32297181696. Its totient is φ = 10584907200.

The previous prime is 21350534129. The next prime is 21350534171. The reversal of 21350534134 is 43143505312.

It is a junction number, because it is equal to n+sod(n) for n = 21350534096 and 21350534105.

It is a congruent number.

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, 418074 + ... + 466354.

It is an arithmetic number, because the mean of its divisors is an integer number (2018573856).

Almost surely, 2^21350534134 is an apocalyptic number.

21350534134 is a deficient number, since it is larger than the sum of its proper divisors (10946647562).

21350534134 is a wasteful number, since it uses less digits than its factorization.

21350534134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50151.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 21350534134 in words is "twenty-one billion, three hundred fifty million, five hundred thirty-four thousand, one hundred thirty-four".