1541695964161 has 2 divisors, whose sum is σ = 1541695964162. Its totient is φ = 1541695964160.

The previous prime is 1541695964143. The next prime is 1541695964197. The reversal of 1541695964161 is 1614695961451.

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., 881448711025 + 660247253136 = 938855^2 + 812556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1541695964161 - 2¹⁵ = 1541695931393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1541695964096 and 1541695964105.

It is not a weakly prime, because it can be changed into another prime (1541695964761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770847982080 + 770847982081.

It is an arithmetic number, because the mean of its divisors is an integer number (770847982081).

Almost surely, 2^{1541695964161} is an apocalyptic number.

It is an amenable number.

1541695964161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541695964161 is an equidigital number, since it uses as much as digits as its factorization.

1541695964161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 58.

The spelling of 1541695964161 in words is "one trillion, five hundred forty-one billion, six hundred ninety-five million, nine hundred sixty-four thousand, one hundred sixty-one".