15663550560 has 192 divisors, whose sum is σ = 56458612224. Its totient is φ = 3575808000.

The previous prime is 15663550541. The next prime is 15663550571. The reversal of 15663550560 is 6505536651.

It is a super-2 number, since 2×15663550560² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3260160 + ... + 3264960.

It is an arithmetic number, because the mean of its divisors is an integer number (294055272).

Almost surely, 2^15663550560 is an apocalyptic number.

15663550560 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 15663550560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28229306112).

15663550560 is an abundant number, since it is smaller than the sum of its proper divisors (40795061664).

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

15663550560 is a wasteful number, since it uses less digits than its factorization.

15663550560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797 (or 5789 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 42.

The spelling of 15663550560 in words is "fifteen billion, six hundred sixty-three million, five hundred fifty thousand, five hundred sixty".