164245414452541 has 2 divisors, whose sum is σ = 164245414452542. Its totient is φ = 164245414452540.

The previous prime is 164245414452479. The next prime is 164245414452599. The reversal of 164245414452541 is 145254414542461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86706453256900 + 77538961195641 = 9311630^2 + 8805621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164245414452541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164245414450541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82122707226270 + 82122707226271.

It is an arithmetic number, because the mean of its divisors is an integer number (82122707226271).

Almost surely, 2^{164245414452541} is an apocalyptic number.

It is an amenable number.

164245414452541 is a deficient number, since it is larger than the sum of its proper divisors (1).

164245414452541 is an equidigital number, since it uses as much as digits as its factorization.

164245414452541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288000, while the sum is 52.

The spelling of 164245414452541 in words is "one hundred sixty-four trillion, two hundred forty-five billion, four hundred fourteen million, four hundred fifty-two thousand, five hundred forty-one".