16749788407872 has 112 divisors (see below), whose sum is σ = 47728150659840. Its totient is φ = 5153566076928.

The previous prime is 16749788407853. The next prime is 16749788407909. The reversal of 16749788407872 is 27870488794761.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65964868 + ... + 66218300.

It is an arithmetic number, because the mean of its divisors is an integer number (426144202320).

Almost surely, 2^{16749788407872} is an apocalyptic number.

16749788407872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16749788407872 is an abundant number, since it is smaller than the sum of its proper divisors (30978362251968).

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

16749788407872 is a wasteful number, since it uses less digits than its factorization.

16749788407872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279940 (or 279930 counting only the distinct ones).

The product of its (nonzero) digits is 2124251136, while the sum is 78.

The spelling of 16749788407872 in words is "sixteen trillion, seven hundred forty-nine billion, seven hundred eighty-eight million, four hundred seven thousand, eight hundred seventy-two".