1666850926051 has 2 divisors, whose sum is σ = 1666850926052. Its totient is φ = 1666850926050.

The previous prime is 1666850926001. The next prime is 1666850926183. The reversal of 1666850926051 is 1506290586661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1666850926051 - 2¹⁵ = 1666850893283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1666850925983 and 1666850926001.

It is not a weakly prime, because it can be changed into another prime (1666850926001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833425463025 + 833425463026.

It is an arithmetic number, because the mean of its divisors is an integer number (833425463026).

Almost surely, 2^{1666850926051} is an apocalyptic number.

1666850926051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1666850926051 is an equidigital number, since it uses as much as digits as its factorization.

1666850926051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 1666850926051 in words is "one trillion, six hundred sixty-six billion, eight hundred fifty million, nine hundred twenty-six thousand, fifty-one".