1680376031812 has 6 divisors (see below), whose sum is σ = 2940658055678. Its totient is φ = 840188015904.

The previous prime is 1680376031777. The next prime is 1680376031821. The reversal of 1680376031812 is 2181306730861.

It can be written as a sum of positive squares in only one way, i.e., 1604544090436 + 75831941376 = 1266706^2 + 275376^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210047003973 + ... + 210047003980.

Almost surely, 2^{1680376031812} is an apocalyptic number.

It is an amenable number.

1680376031812 is a deficient number, since it is larger than the sum of its proper divisors (1260282023866).

1680376031812 is a wasteful number, since it uses less digits than its factorization.

1680376031812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420094007957 (or 420094007955 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 1680376031812 in words is "one trillion, six hundred eighty billion, three hundred seventy-six million, thirty-one thousand, eight hundred twelve".