15520340112 has 20 divisors (see below), whose sum is σ = 40094212080. Its totient is φ = 5173446688.

The previous prime is 15520340107. The next prime is 15520340117. The reversal of 15520340112 is 21104302551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15520340107) and next prime (15520340117).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (15520340117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161670162 + ... + 161670257.

It is an arithmetic number, because the mean of its divisors is an integer number (2004710604).

Almost surely, 2^15520340112 is an apocalyptic number.

15520340112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15520340112 is an abundant number, since it is smaller than the sum of its proper divisors (24573871968).

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

15520340112 is a wasteful number, since it uses less digits than its factorization.

15520340112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323340430 (or 323340424 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 15520340112 its reverse (21104302551), we get a palindrome (36624642663).

The spelling of 15520340112 in words is "fifteen billion, five hundred twenty million, three hundred forty thousand, one hundred twelve".