21652038426 has 8 divisors (see below), whose sum is σ = 43304076864. Its totient is φ = 7217346140.

The previous prime is 21652038409. The next prime is 21652038467. The reversal of 21652038426 is 62483025612.

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

21652038426 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804336530 + ... + 1804336541.

It is an arithmetic number, because the mean of its divisors is an integer number (5413009608).

Almost surely, 2^21652038426 is an apocalyptic number.

21652038426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21652038426 is a wasteful number, since it uses less digits than its factorization.

21652038426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608673076.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 21652038426 in words is "twenty-one billion, six hundred fifty-two million, thirty-eight thousand, four hundred twenty-six".