21150522524 has 12 divisors (see below), whose sum is σ = 38961489000. Its totient is φ = 10018668528.

The previous prime is 21150522517. The next prime is 21150522557. The reversal of 21150522524 is 42522505112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139148099 + ... + 139148250.

It is an arithmetic number, because the mean of its divisors is an integer number (3246790750).

Almost surely, 2^21150522524 is an apocalyptic number.

It is an amenable number.

21150522524 is a deficient number, since it is larger than the sum of its proper divisors (17810966476).

21150522524 is a wasteful number, since it uses less digits than its factorization.

21150522524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278296372 (or 278296370 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 21150522524 in words is "twenty-one billion, one hundred fifty million, five hundred twenty-two thousand, five hundred twenty-four".