21286298696 has 32 divisors (see below), whose sum is σ = 43376302200. Its totient is φ = 9734307840.

The previous prime is 21286298669. The next prime is 21286298713. The reversal of 21286298696 is 69689268212.

It can be written as a sum of positive squares in 4 ways, for example, as 20884296196 + 402002500 = 144514^2 + 20050^2 .

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, 927545 + ... + 950216.

Almost surely, 2^21286298696 is an apocalyptic number.

21286298696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21286298696 is an abundant number, since it is smaller than the sum of its proper divisors (22090003504).

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

21286298696 is a wasteful number, since it uses less digits than its factorization.

21286298696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877889 (or 1877885 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 59.

The spelling of 21286298696 in words is "twenty-one billion, two hundred eighty-six million, two hundred ninety-eight thousand, six hundred ninety-six".