16920798693480 has 192 divisors, whose sum is σ = 61387084249920. Its totient is φ = 4006616140800.

The previous prime is 16920798693467. The next prime is 16920798693499. The reversal of 16920798693480 is 8439689702961.

16920798693480 is a `hidden beast` number, since 1 + 69 + 2 + 0 + 7 + 9 + 86 + 9 + 3 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 16920798693399 and 16920798693408.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49514941 + ... + 49855500.

It is an arithmetic number, because the mean of its divisors is an integer number (319724397135).

Almost surely, 2^{16920798693480} is an apocalyptic number.

16920798693480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16920798693480 is an abundant number, since it is smaller than the sum of its proper divisors (44466285556440).

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

16920798693480 is a wasteful number, since it uses less digits than its factorization.

16920798693480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99370512 (or 99370505 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 16920798693480 in words is "sixteen trillion, nine hundred twenty billion, seven hundred ninety-eight million, six hundred ninety-three thousand, four hundred eighty".