2541646985161 has 2 divisors, whose sum is σ = 2541646985162. Its totient is φ = 2541646985160.

The previous prime is 2541646985057. The next prime is 2541646985233. The reversal of 2541646985161 is 1615896461452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1889954059536 + 651692925625 = 1374756^2 + 807275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541646985161 - 2¹⁵ = 2541646952393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2541646985096 and 2541646985105.

It is not a weakly prime, because it can be changed into another prime (2541646988161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270823492580 + 1270823492581.

It is an arithmetic number, because the mean of its divisors is an integer number (1270823492581).

Almost surely, 2^{2541646985161} is an apocalyptic number.

It is an amenable number.

2541646985161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541646985161 is an equidigital number, since it uses as much as digits as its factorization.

2541646985161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12441600, while the sum is 58.

The spelling of 2541646985161 in words is "two trillion, five hundred forty-one billion, six hundred forty-six million, nine hundred eighty-five thousand, one hundred sixty-one".