1961735810141 has 2 divisors, whose sum is σ = 1961735810142. Its totient is φ = 1961735810140.

The previous prime is 1961735810131. The next prime is 1961735810147. The reversal of 1961735810141 is 1410185371691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1493701953241 + 468033856900 = 1222171^2 + 684130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1961735810141 - 2¹⁸ = 1961735547997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961735810147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980867905070 + 980867905071.

It is an arithmetic number, because the mean of its divisors is an integer number (980867905071).

Almost surely, 2^{1961735810141} is an apocalyptic number.

It is an amenable number.

1961735810141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961735810141 is an equidigital number, since it uses as much as digits as its factorization.

1961735810141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 1961735810141 in words is "one trillion, nine hundred sixty-one billion, seven hundred thirty-five million, eight hundred ten thousand, one hundred forty-one".