427177148161 has 2 divisors, whose sum is σ = 427177148162. Its totient is φ = 427177148160.

The previous prime is 427177148149. The next prime is 427177148227. The reversal of 427177148161 is 161841771724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411193867536 + 15983280625 = 641244^2 + 126425^2 .

It is a cyclic number.

It is not a de Polignac number, because 427177148161 - 2⁷ = 427177148033 is a prime.

It is not a weakly prime, because it can be changed into another prime (427171148161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213588574080 + 213588574081.

It is an arithmetic number, because the mean of its divisors is an integer number (213588574081).

Almost surely, 2^427177148161 is an apocalyptic number.

It is an amenable number.

427177148161 is a deficient number, since it is larger than the sum of its proper divisors (1).

427177148161 is an equidigital number, since it uses as much as digits as its factorization.

427177148161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 49.

The spelling of 427177148161 in words is "four hundred twenty-seven billion, one hundred seventy-seven million, one hundred forty-eight thousand, one hundred sixty-one".