15616912926976 has 81 divisors (see below), whose sum is σ = 31700058807963. Its totient is φ = 7678552104960.

The previous prime is 15616912926961. The next prime is 15616912927061. The reversal of 15616912926976 is 67962921961651.

The square root of 15616912926976 is 3951824.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9162874296576 + 6454038630400 = 3027024^2 + 2540480^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3856978200 + ... + 3856982248.

Almost surely, 2^{15616912926976} is an apocalyptic number.

15616912926976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

15616912926976 is the 3951824-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15616912926976

15616912926976 is an abundant number, since it is smaller than the sum of its proper divisors (16083145880987).

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

15616912926976 is an frugal number, since it uses more digits than its factorization.

15616912926976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236 (or 4112 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 70.

The spelling of 15616912926976 in words is "fifteen trillion, six hundred sixteen billion, nine hundred twelve million, nine hundred twenty-six thousand, nine hundred seventy-six".