21522650588 has 6 divisors (see below), whose sum is σ = 37664638536. Its totient is φ = 10761325292.

The previous prime is 21522650587. The next prime is 21522650671. The reversal of 21522650588 is 88505622512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21522650587) by changing a digit.

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 as a sum of consecutive naturals, namely, 2690331320 + ... + 2690331327.

It is an arithmetic number, because the mean of its divisors is an integer number (6277439756).

Almost surely, 2^21522650588 is an apocalyptic number.

It is an amenable number.

21522650588 is a deficient number, since it is larger than the sum of its proper divisors (16141987948).

21522650588 is a wasteful number, since it uses less digits than its factorization.

21522650588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380662651 (or 5380662649 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 21522650588 in words is "twenty-one billion, five hundred twenty-two million, six hundred fifty thousand, five hundred eighty-eight".