1696940279987 has 2 divisors, whose sum is σ = 1696940279988. Its totient is φ = 1696940279986.

The previous prime is 1696940279981. The next prime is 1696940280017. The reversal of 1696940279987 is 7899720496961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1696940279987 - 2¹⁰ = 1696940278963 is a prime.

It is a super-3 number, since 3×1696940279987³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1696940279981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848470139993 + 848470139994.

It is an arithmetic number, because the mean of its divisors is an integer number (848470139994).

Almost surely, 2^{1696940279987} is an apocalyptic number.

1696940279987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1696940279987 is an equidigital number, since it uses as much as digits as its factorization.

1696940279987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740710656, while the sum is 77.

The spelling of 1696940279987 in words is "one trillion, six hundred ninety-six billion, nine hundred forty million, two hundred seventy-nine thousand, nine hundred eighty-seven".