2061692987117 has 2 divisors, whose sum is σ = 2061692987118. Its totient is φ = 2061692987116.

The previous prime is 2061692987099. The next prime is 2061692987171. The reversal of 2061692987117 is 7117892961602.

Together with next prime (2061692987171) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1482466964356 + 579226022761 = 1217566^2 + 761069^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061692987117 - 2³⁸ = 1786815080173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061692987917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030846493558 + 1030846493559.

It is an arithmetic number, because the mean of its divisors is an integer number (1030846493559).

Almost surely, 2^{2061692987117} is an apocalyptic number.

It is an amenable number.

2061692987117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061692987117 is an equidigital number, since it uses as much as digits as its factorization.

2061692987117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 59.

The spelling of 2061692987117 in words is "two trillion, sixty-one billion, six hundred ninety-two million, nine hundred eighty-seven thousand, one hundred seventeen".