120619741661 has 2 divisors, whose sum is σ = 120619741662. Its totient is φ = 120619741660.

The previous prime is 120619741651. The next prime is 120619741729. The reversal of 120619741661 is 166147916021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103173294436 + 17446447225 = 321206^2 + 132085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120619741661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120619741651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60309870830 + 60309870831.

It is an arithmetic number, because the mean of its divisors is an integer number (60309870831).

Almost surely, 2^120619741661 is an apocalyptic number.

It is an amenable number.

120619741661 is a deficient number, since it is larger than the sum of its proper divisors (1).

120619741661 is an equidigital number, since it uses as much as digits as its factorization.

120619741661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 120619741661 in words is "one hundred twenty billion, six hundred nineteen million, seven hundred forty-one thousand, six hundred sixty-one".