21134000854 has 8 divisors (see below), whose sum is σ = 31719299040. Its totient is φ = 10560901176.

The previous prime is 21134000851. The next prime is 21134000887. The reversal of 21134000854 is 45800043112.

21134000854 = T₁₁₈₆₉₇ + T₁₁₈₆₉₈ + T₁₁₈₆₉₉.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134000851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3045294 + ... + 3052225.

It is an arithmetic number, because the mean of its divisors is an integer number (3964912380).

Almost surely, 2^21134000854 is an apocalyptic number.

21134000854 is the 118699-th centered triangular number.

21134000854 is a deficient number, since it is larger than the sum of its proper divisors (10585298186).

21134000854 is a wasteful number, since it uses less digits than its factorization.

21134000854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099254.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 21134000854 its reverse (45800043112), we get a palindrome (66934043966).

The spelling of 21134000854 in words is "twenty-one billion, one hundred thirty-four million, eight hundred fifty-four", and thus it is an aban number.