164048575477 has 2 divisors, whose sum is σ = 164048575478. Its totient is φ = 164048575476.

The previous prime is 164048575459. The next prime is 164048575489. The reversal of 164048575477 is 774575840461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149621202481 + 14427372996 = 386809^2 + 120114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164048575477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164048575777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82024287738 + 82024287739.

It is an arithmetic number, because the mean of its divisors is an integer number (82024287739).

Almost surely, 2^164048575477 is an apocalyptic number.

It is an amenable number.

164048575477 is a deficient number, since it is larger than the sum of its proper divisors (1).

164048575477 is an equidigital number, since it uses as much as digits as its factorization.

164048575477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26342400, while the sum is 58.

The spelling of 164048575477 in words is "one hundred sixty-four billion, forty-eight million, five hundred seventy-five thousand, four hundred seventy-seven".