15230020656 has 80 divisors (see below), whose sum is σ = 41729472000. Its totient is φ = 4769915904.

The previous prime is 15230020651. The next prime is 15230020667. The reversal of 15230020656 is 65602003251.

15230020656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15230020651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473205 + ... + 504363.

It is an arithmetic number, because the mean of its divisors is an integer number (521618400).

Almost surely, 2^15230020656 is an apocalyptic number.

15230020656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15230020656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20864736000).

15230020656 is an abundant number, since it is smaller than the sum of its proper divisors (26499451344).

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

15230020656 is a wasteful number, since it uses less digits than its factorization.

15230020656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31786 (or 31780 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 15230020656 in words is "fifteen billion, two hundred thirty million, twenty thousand, six hundred fifty-six".