13164430271561 has 2 divisors, whose sum is σ = 13164430271562. Its totient is φ = 13164430271560.

The previous prime is 13164430271521. The next prime is 13164430271567. The reversal of 13164430271561 is 16517203446131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12050138911561 + 1114291360000 = 3471331^2 + 1055600^2 .

It is a cyclic number.

It is not a de Polignac number, because 13164430271561 - 2⁶ = 13164430271497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13164430271567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6582215135780 + 6582215135781.

It is an arithmetic number, because the mean of its divisors is an integer number (6582215135781).

Almost surely, 2^{13164430271561} is an apocalyptic number.

It is an amenable number.

13164430271561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13164430271561 is an equidigital number, since it uses as much as digits as its factorization.

13164430271561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 13164430271561 in words is "thirteen trillion, one hundred sixty-four billion, four hundred thirty million, two hundred seventy-one thousand, five hundred sixty-one".