21624156530132 has 12 divisors (see below), whose sum is σ = 40753218076116. Its totient is φ = 9980379936960.

The previous prime is 21624156530131. The next prime is 21624156530161. The reversal of 21624156530132 is 23103565142612.

It can be written as a sum of positive squares in 2 ways, for example, as 7269257176336 + 14354899353796 = 2696156^2 + 3788786^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21624156530132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21624156530131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207924581969 + ... + 207924582072.

It is an arithmetic number, because the mean of its divisors is an integer number (3396101506343).

Almost surely, 2^{21624156530132} is an apocalyptic number.

It is an amenable number.

21624156530132 is a deficient number, since it is larger than the sum of its proper divisors (19129061545984).

21624156530132 is a wasteful number, since it uses less digits than its factorization.

21624156530132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415849164058 (or 415849164056 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 21624156530132 in words is "twenty-one trillion, six hundred twenty-four billion, one hundred fifty-six million, five hundred thirty thousand, one hundred thirty-two".