161246377441 has 2 divisors, whose sum is σ = 161246377442. Its totient is φ = 161246377440.

The previous prime is 161246377423. The next prime is 161246377489. The reversal of 161246377441 is 144773642161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125071859025 + 36174518416 = 353655^2 + 190196^2 .

It is a cyclic number.

It is not a de Polignac number, because 161246377441 - 2¹⁵ = 161246344673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161246377391 and 161246377400.

It is not a weakly prime, because it can be changed into another prime (161246377741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80623188720 + 80623188721.

It is an arithmetic number, because the mean of its divisors is an integer number (80623188721).

Almost surely, 2^161246377441 is an apocalyptic number.

It is an amenable number.

161246377441 is a deficient number, since it is larger than the sum of its proper divisors (1).

161246377441 is an equidigital number, since it uses as much as digits as its factorization.

161246377441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The spelling of 161246377441 in words is "one hundred sixty-one billion, two hundred forty-six million, three hundred seventy-seven thousand, four hundred forty-one".