15616302312 has 128 divisors (see below), whose sum is σ = 44393731200. Its totient is φ = 4538032128.

The previous prime is 15616302301. The next prime is 15616302337. The reversal of 15616302312 is 21320361651.

It is a self number, because there is not a number n which added to its sum of digits gives 15616302312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1993828 + ... + 2001644.

It is an arithmetic number, because the mean of its divisors is an integer number (346826025).

Almost surely, 2^15616302312 is an apocalyptic number.

15616302312 is a gapful number since it is divisible by the number (12) 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 15616302312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22196865600).

15616302312 is an abundant number, since it is smaller than the sum of its proper divisors (28777428888).

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

15616302312 is a wasteful number, since it uses less digits than its factorization.

15616302312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8195 (or 8191 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 15616302312 its reverse (21320361651), we get a palindrome (36936663963).

The spelling of 15616302312 in words is "fifteen billion, six hundred sixteen million, three hundred two thousand, three hundred twelve".