21134286469 has 2 divisors, whose sum is σ = 21134286470. Its totient is φ = 21134286468.

The previous prime is 21134286421. The next prime is 21134286517. The reversal of 21134286469 is 96468243112.

It is a balanced prime because it is at equal distance from previous prime (21134286421) and next prime (21134286517).

It can be written as a sum of positive squares in only one way, i.e., 19157328100 + 1976958369 = 138410^2 + 44463^2 .

It is a cyclic number.

It is not a de Polignac number, because 21134286469 - 2²¹ = 21132189317 is a prime.

It is a super-2 number, since 2×21134286469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21134286409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10567143234 + 10567143235.

It is an arithmetic number, because the mean of its divisors is an integer number (10567143235).

Almost surely, 2^21134286469 is an apocalyptic number.

It is an amenable number.

21134286469 is a deficient number, since it is larger than the sum of its proper divisors (1).

21134286469 is an equidigital number, since it uses as much as digits as its factorization.

21134286469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 46.

The spelling of 21134286469 in words is "twenty-one billion, one hundred thirty-four million, two hundred eighty-six thousand, four hundred sixty-nine".