21134286513 has 12 divisors (see below), whose sum is σ = 30556925568. Its totient is φ = 14075852280.

The previous prime is 21134286469. The next prime is 21134286517. The reversal of 21134286513 is 31568243112.

21134286513 is a `hidden beast` number, since 2 + 1 + 134 + 2 + 8 + 6 + 513 = 666.

It is not a de Polignac number, because 21134286513 - 2⁹ = 21134286001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21134286517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1129545 + ... + 1148102.

It is an arithmetic number, because the mean of its divisors is an integer number (2546410464).

Almost surely, 2^21134286513 is an apocalyptic number.

It is an amenable number.

21134286513 is a deficient number, since it is larger than the sum of its proper divisors (9422639055).

21134286513 is a wasteful number, since it uses less digits than its factorization.

21134286513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278684 (or 2278681 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 21134286513 in words is "twenty-one billion, one hundred thirty-four million, two hundred eighty-six thousand, five hundred thirteen".