16868636772 has 48 divisors (see below), whose sum is σ = 44618804160. Its totient is φ = 4917172608.

The previous prime is 16868636731. The next prime is 16868636779. The reversal of 16868636772 is 27763686861.

It is not an unprimeable number, because it can be changed into a prime (16868636779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2842623 + ... + 2848550.

It is an arithmetic number, because the mean of its divisors is an integer number (929558420).

Almost surely, 2^16868636772 is an apocalyptic number.

16868636772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16868636772 is an abundant number, since it is smaller than the sum of its proper divisors (27750167388).

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

16868636772 is a wasteful number, since it uses less digits than its factorization.

16868636772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691212 (or 5691210 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 16868636772 in words is "sixteen billion, eight hundred sixty-eight million, six hundred thirty-six thousand, seven hundred seventy-two".