16787198721792 has 72 divisors (see below), whose sum is σ = 44679291990480. Its totient is φ = 5595624939520.

The previous prime is 16787198721791. The next prime is 16787198721793. The reversal of 16787198721792 is 29712789178761.

It is an interprime number because it is at equal distance from previous prime (16787198721791) and next prime (16787198721793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16787198721791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46290292 + ... + 46651532.

It is an arithmetic number, because the mean of its divisors is an integer number (620545722090).

Almost surely, 2^{16787198721792} is an apocalyptic number.

16787198721792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16787198721792 is an abundant number, since it is smaller than the sum of its proper divisors (27892093268688).

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

16787198721792 is an equidigital number, since it uses as much as digits as its factorization.

16787198721792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421769 (or 421755 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 75.

The spelling of 16787198721792 in words is "sixteen trillion, seven hundred eighty-seven billion, one hundred ninety-eight million, seven hundred twenty-one thousand, seven hundred ninety-two".