1961142072107 has 2 divisors, whose sum is σ = 1961142072108. Its totient is φ = 1961142072106.

The previous prime is 1961142072091. The next prime is 1961142072121. The reversal of 1961142072107 is 7012702411691.

It is a strong prime.

It is an emirp because it is prime and its reverse (7012702411691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1961142072107 - 2⁴ = 1961142072091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1961142072607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980571036053 + 980571036054.

It is an arithmetic number, because the mean of its divisors is an integer number (980571036054).

Almost surely, 2^{1961142072107} is an apocalyptic number.

1961142072107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961142072107 is an equidigital number, since it uses as much as digits as its factorization.

1961142072107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 41.

Adding to 1961142072107 its reverse (7012702411691), we get a palindrome (8973844483798).

The spelling of 1961142072107 in words is "one trillion, nine hundred sixty-one billion, one hundred forty-two million, seventy-two thousand, one hundred seven".