120981665471 has 2 divisors, whose sum is σ = 120981665472. Its totient is φ = 120981665470.

The previous prime is 120981665423. The next prime is 120981665507. The reversal of 120981665471 is 174566189021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120981665471 is a prime.

It is a super-3 number, since 3×120981665471³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120981668471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60490832735 + 60490832736.

It is an arithmetic number, because the mean of its divisors is an integer number (60490832736).

Almost surely, 2^120981665471 is an apocalyptic number.

120981665471 is a deficient number, since it is larger than the sum of its proper divisors (1).

120981665471 is an equidigital number, since it uses as much as digits as its factorization.

120981665471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 120981665471 in words is "one hundred twenty billion, nine hundred eighty-one million, six hundred sixty-five thousand, four hundred seventy-one".