21552107286 has 32 divisors (see below), whose sum is σ = 44079811200. Its totient is φ = 7022797760.

The previous prime is 21552107267. The next prime is 21552107321. The reversal of 21552107286 is 68270125512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106695 + ... + 233426.

It is an arithmetic number, because the mean of its divisors is an integer number (1377494100).

Almost surely, 2^21552107286 is an apocalyptic number.

21552107286 is an abundant number, since it is smaller than the sum of its proper divisors (22527703914).

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

21552107286 is a wasteful number, since it uses less digits than its factorization.

21552107286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340364.

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 21552107286 in words is "twenty-one billion, five hundred fifty-two million, one hundred seven thousand, two hundred eighty-six".