1680549463719 has 72 divisors (see below), whose sum is σ = 2990284633440. Its totient is φ = 903704159232.

The previous prime is 1680549463699. The next prime is 1680549463781. The reversal of 1680549463719 is 9173649450861.

1680549463719 is a `hidden beast` number, since 1 + 6 + 8 + 0 + 549 + 46 + 37 + 19 = 666.

It is not a de Polignac number, because 1680549463719 - 2⁷ = 1680549463591 is a prime.

It is a super-2 number, since 2×1680549463719² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680549463799) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 109695942 + ... + 109711260.

It is an arithmetic number, because the mean of its divisors is an integer number (41531731020).

Almost surely, 2^{1680549463719} is an apocalyptic number.

1680549463719 is a deficient number, since it is larger than the sum of its proper divisors (1309735169721).

1680549463719 is a wasteful number, since it uses less digits than its factorization.

1680549463719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29989 (or 29979 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 1680549463719 in words is "one trillion, six hundred eighty billion, five hundred forty-nine million, four hundred sixty-three thousand, seven hundred nineteen".