120783983885689 has 2 divisors, whose sum is σ = 120783983885690. Its totient is φ = 120783983885688.

The previous prime is 120783983885647. The next prime is 120783983885729. The reversal of 120783983885689 is 986588389387021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119719923555600 + 1064060330089 = 10941660^2 + 1031533^2 .

It is a cyclic number.

It is not a de Polignac number, because 120783983885689 - 2³¹ = 120781836402041 is a prime.

It is not a weakly prime, because it can be changed into another prime (120783983885989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60391991942844 + 60391991942845.

It is an arithmetic number, because the mean of its divisors is an integer number (60391991942845).

Almost surely, 2^{120783983885689} is an apocalyptic number.

It is an amenable number.

120783983885689 is a deficient number, since it is larger than the sum of its proper divisors (1).

120783983885689 is an equidigital number, since it uses as much as digits as its factorization.

120783983885689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10032906240, while the sum is 85.

The spelling of 120783983885689 in words is "one hundred twenty trillion, seven hundred eighty-three billion, nine hundred eighty-three million, eight hundred eighty-five thousand, six hundred eighty-nine".