21010014531624 has 64 divisors (see below), whose sum is σ = 53226451923840. Its totient is φ = 6910307032320.

The previous prime is 21010014531587. The next prime is 21010014531673. The reversal of 21010014531624 is 42613541001012.

It is a junction number, because it is equal to n+sod(n) for n = 21010014531591 and 21010014531600.

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, 14656767 + ... + 16026254.

It is an arithmetic number, because the mean of its divisors is an integer number (831663311310).

Almost surely, 2^{21010014531624} is an apocalyptic number.

21010014531624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21010014531624 is an abundant number, since it is smaller than the sum of its proper divisors (32216437392216).

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

21010014531624 is a wasteful number, since it uses less digits than its factorization.

21010014531624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30683410 (or 30683406 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 21010014531624 its reverse (42613541001012), we get a palindrome (63623555532636).

The spelling of 21010014531624 in words is "twenty-one trillion, ten billion, fourteen million, five hundred thirty-one thousand, six hundred twenty-four".