16791919550 has 24 divisors (see below), whose sum is σ = 35694824016. Its totient is φ = 5757229440.

The previous prime is 16791919537. The next prime is 16791919607. The reversal of 16791919550 is 5591919761.

It is a junction number, because it is equal to n+sod(n) for n = 16791919492 and 16791919501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23988107 + ... + 23988806.

It is an arithmetic number, because the mean of its divisors is an integer number (1487284334).

Almost surely, 2^16791919550 is an apocalyptic number.

16791919550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16791919550 is an abundant number, since it is smaller than the sum of its proper divisors (18902904466).

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

16791919550 is a wasteful number, since it uses less digits than its factorization.

16791919550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47976932 (or 47976927 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 53.

The spelling of 16791919550 in words is "sixteen billion, seven hundred ninety-one million, nine hundred nineteen thousand, five hundred fifty".