15530755968 has 896 divisors, whose sum is σ = 59934873600. Its totient is φ = 3896709120.

The previous prime is 15530755967. The next prime is 15530755969. The reversal of 15530755968 is 86955703551.

15530755968 is a `hidden beast` number, since 1 + 55 + 30 + 7 + 559 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (15530755967) and next prime (15530755969).

It is a tau number, because it is divible by the number of its divisors (896).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15530755963) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 263233123 + ... + 263233181.

It is an arithmetic number, because the mean of its divisors is an integer number (66891600).

Almost surely, 2^15530755968 is an apocalyptic number.

15530755968 is a gapful number since it is divisible by the number (18) 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 15530755968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29967436800).

15530755968 is an abundant number, since it is smaller than the sum of its proper divisors (44404117632).

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

15530755968 is an equidigital number, since it uses as much as digits as its factorization.

15530755968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 54.

The spelling of 15530755968 in words is "fifteen billion, five hundred thirty million, seven hundred fifty-five thousand, nine hundred sixty-eight".