1690085840701 has 2 divisors, whose sum is σ = 1690085840702. Its totient is φ = 1690085840700.

The previous prime is 1690085840687. The next prime is 1690085840731. The reversal of 1690085840701 is 1070485800961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1597076700025 + 93009140676 = 1263755^2 + 304974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1690085840701 - 2³⁹ = 1140330026813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690085840731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845042920350 + 845042920351.

It is an arithmetic number, because the mean of its divisors is an integer number (845042920351).

Almost surely, 2^{1690085840701} is an apocalyptic number.

It is an amenable number.

1690085840701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690085840701 is an equidigital number, since it uses as much as digits as its factorization.

1690085840701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 1690085840701 in words is "one trillion, six hundred ninety billion, eighty-five million, eight hundred forty thousand, seven hundred one".