21102624654630 has 32 divisors (see below), whose sum is σ = 50646684409344. Its totient is φ = 5627323770336.

The previous prime is 21102624654593. The next prime is 21102624654653. The reversal of 21102624654630 is 3645642620112.

It is a happy number.

It is a Curzon number.

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, 1438179 + ... + 6653841.

It is an arithmetic number, because the mean of its divisors is an integer number (1582708887792).

Almost surely, 2^{21102624654630} is an apocalyptic number.

21102624654630 is an abundant number, since it is smaller than the sum of its proper divisors (29544059754714).

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

21102624654630 is a wasteful number, since it uses less digits than its factorization.

21102624654630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5350540.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 21102624654630 in words is "twenty-one trillion, one hundred two billion, six hundred twenty-four million, six hundred fifty-four thousand, six hundred thirty".