15655500000 has 756 divisors, whose sum is σ = 65647128456. Its totient is φ = 3528000000.

The previous prime is 15655499969. The next prime is 15655500011. The reversal of 15655500000 is 555651.

15655500000 is a `hidden beast` number, since 1 + 5 + 655 + 5 + 0 + 0 + 0 + 0 + 0 = 666.

15655500000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 125 ways as a sum of consecutive naturals, for example, 220499965 + ... + 220500035.

It is an arithmetic number, because the mean of its divisors is an integer number (86834826).

Almost surely, 2^15655500000 is an apocalyptic number.

15655500000 is a gapful number since it is divisible by the number (10) 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 15655500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32823564228).

15655500000 is an abundant number, since it is smaller than the sum of its proper divisors (49991628456).

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

15655500000 is an frugal number, since it uses more digits than its factorization.

15655500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 15655500000 in words is "fifteen billion, six hundred fifty-five million, five hundred thousand".