16791494724 has 135 divisors (see below), whose sum is σ = 46034872653. Its totient is φ = 5336705088.

The previous prime is 16791494683. The next prime is 16791494743. The reversal of 16791494724 is 42749419761.

The square root of 16791494724 is 129582.

It is a perfect power (a square), and thus also a powerful number.

16791494724 is a `hidden beast` number, since 1 + 67 + 91 + 494 + 7 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 107122500 + 16684372224 = 10350^2 + 129168^2 .

It is a super-2 number, since 2×16791494724² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 53646792 + ... + 53647104.

Almost surely, 2^16791494724 is an apocalyptic number.

16791494724 is the 129582-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16791494724

16791494724 is an abundant number, since it is smaller than the sum of its proper divisors (29243377929).

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

16791494724 is an equidigital number, since it uses as much as digits as its factorization.

16791494724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 341 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 16791494724 in words is "sixteen billion, seven hundred ninety-one million, four hundred ninety-four thousand, seven hundred twenty-four".