16719057864 has 48 divisors (see below), whose sum is σ = 47944360620. Its totient is φ = 5245194240.

The previous prime is 16719057853. The next prime is 16719057871. The reversal of 16719057864 is 46875091761.

16719057864 is a `hidden beast` number, since 1 + 6 + 7 + 1 + 9 + 0 + 578 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15462922500 + 1256135364 = 124350^2 + 35442^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16719057864.

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, 6828457 + ... + 6830904.

Almost surely, 2^16719057864 is an apocalyptic number.

It is an amenable number.

16719057864 is an abundant number, since it is smaller than the sum of its proper divisors (31225302756).

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

16719057864 is a wasteful number, since it uses less digits than its factorization.

16719057864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13659390 (or 13659383 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

It can be divided in two parts, 16719057 and 864, that added together give a square (16719921 = 4089²).

The spelling of 16719057864 in words is "sixteen billion, seven hundred nineteen million, fifty-seven thousand, eight hundred sixty-four".