1626061874861 has 2 divisors, whose sum is σ = 1626061874862. Its totient is φ = 1626061874860.

The previous prime is 1626061874821. The next prime is 1626061874863. The reversal of 1626061874861 is 1684781606261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903041581225 + 723020293636 = 950285^2 + 850306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1626061874861 - 2⁶ = 1626061874797 is a prime.

Together with 1626061874863, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1626061874797 and 1626061874806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1626061874863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813030937430 + 813030937431.

It is an arithmetic number, because the mean of its divisors is an integer number (813030937431).

Almost surely, 2^{1626061874861} is an apocalyptic number.

It is an amenable number.

1626061874861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626061874861 is an equidigital number, since it uses as much as digits as its factorization.

1626061874861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 1626061874861 in words is "one trillion, six hundred twenty-six billion, sixty-one million, eight hundred seventy-four thousand, eight hundred sixty-one".