1680264128929 has 8 divisors (see below), whose sum is σ = 1708283137088. Its totient is φ = 1652260401360.

The previous prime is 1680264128911. The next prime is 1680264128941. The reversal of 1680264128929 is 9298214620861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1680264128929 - 2²³ = 1680255740321 is a prime.

It is a super-2 number, since 2×1680264128929² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680264128909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3598287 + ... + 4038340.

It is an arithmetic number, because the mean of its divisors is an integer number (213535392136).

Almost surely, 2^{1680264128929} is an apocalyptic number.

It is an amenable number.

1680264128929 is a deficient number, since it is larger than the sum of its proper divisors (28019008159).

1680264128929 is an equidigital number, since it uses as much as digits as its factorization.

1680264128929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640295.

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 1680264128929 in words is "one trillion, six hundred eighty billion, two hundred sixty-four million, one hundred twenty-eight thousand, nine hundred twenty-nine".