12985145616 has 40 divisors (see below), whose sum is σ = 33730313344. Its totient is φ = 4304465280.

The previous prime is 12985145603. The next prime is 12985145653. The reversal of 12985145616 is 61654158921.

It is a super-2 number, since 2×12985145616² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738616 + ... + 755991.

Almost surely, 2^12985145616 is an apocalyptic number.

12985145616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12985145616 is an abundant number, since it is smaller than the sum of its proper divisors (20745167728).

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

12985145616 is a wasteful number, since it uses less digits than its factorization.

12985145616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494799 (or 1494793 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The spelling of 12985145616 in words is "twelve billion, nine hundred eighty-five million, one hundred forty-five thousand, six hundred sixteen".