15321220125630 has 32 divisors (see below), whose sum is σ = 36802545692544. Its totient is φ = 4082145656736.

The previous prime is 15321220125581. The next prime is 15321220125697. The reversal of 15321220125630 is 3652102212351.

It is a super-2 number, since 2×15321220125630² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15321220125591 and 15321220125600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219529744 + ... + 219599523.

It is an arithmetic number, because the mean of its divisors is an integer number (1150079552892).

Almost surely, 2^{15321220125630} is an apocalyptic number.

15321220125630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15321220125630 is an abundant number, since it is smaller than the sum of its proper divisors (21481325566914).

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

15321220125630 is a wasteful number, since it uses less digits than its factorization.

15321220125630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439130440.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 15321220125630 its reverse (3652102212351), we get a palindrome (18973322337981).

The spelling of 15321220125630 in words is "fifteen trillion, three hundred twenty-one billion, two hundred twenty million, one hundred twenty-five thousand, six hundred thirty".