16831780056 has 96 divisors (see below), whose sum is σ = 56105955360. Its totient is φ = 4439149056.

The previous prime is 16831780033. The next prime is 16831780099. The reversal of 16831780056 is 65008713861.

It is a junction number, because it is equal to n+sod(n) for n = 16831779993 and 16831780020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1277925 + ... + 1291028.

It is an arithmetic number, because the mean of its divisors is an integer number (584437035).

Almost surely, 2^16831780056 is an apocalyptic number.

It is an amenable number.

16831780056 is an abundant number, since it is smaller than the sum of its proper divisors (39274175304).

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

16831780056 is a wasteful number, since it uses less digits than its factorization.

16831780056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568985 (or 2568978 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16831780056 in words is "sixteen billion, eight hundred thirty-one million, seven hundred eighty thousand, fifty-six".