72412003170161 has 2 divisors, whose sum is σ = 72412003170162. Its totient is φ = 72412003170160.

The previous prime is 72412003170119. The next prime is 72412003170167. The reversal of 72412003170161 is 16107130021427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72347953177600 + 64049992561 = 8505760^2 + 253081^2 .

It is a cyclic number.

It is not a de Polignac number, because 72412003170161 - 2³⁴ = 72394823300977 is a prime.

It is not a weakly prime, because it can be changed into another prime (72412003170167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36206001585080 + 36206001585081.

It is an arithmetic number, because the mean of its divisors is an integer number (36206001585081).

Almost surely, 2^{72412003170161} is an apocalyptic number.

It is an amenable number.

72412003170161 is a deficient number, since it is larger than the sum of its proper divisors (1).

72412003170161 is an equidigital number, since it uses as much as digits as its factorization.

72412003170161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

Adding to 72412003170161 its reverse (16107130021427), we get a palindrome (88519133191588).

The spelling of 72412003170161 in words is "seventy-two trillion, four hundred twelve billion, three million, one hundred seventy thousand, one hundred sixty-one".