6475772161 has 2 divisors, whose sum is σ = 6475772162. Its totient is φ = 6475772160.

The previous prime is 6475772137. The next prime is 6475772167. The reversal of 6475772161 is 1612775746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4658881536 + 1816890625 = 68256^2 + 42625^2 .

It is a cyclic number.

It is not a de Polignac number, because 6475772161 - 2¹³ = 6475763969 is a prime.

It is not a weakly prime, because it can be changed into another prime (6475772167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3237886080 + 3237886081.

It is an arithmetic number, because the mean of its divisors is an integer number (3237886081).

Almost surely, 2^6475772161 is an apocalyptic number.

It is an amenable number.

6475772161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6475772161 is an equidigital number, since it uses as much as digits as its factorization.

6475772161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 46.

The square root of 6475772161 is about 80472.1825291200. The cubic root of 6475772161 is about 1863.9339561392.

The spelling of 6475772161 in words is "six billion, four hundred seventy-five million, seven hundred seventy-two thousand, one hundred sixty-one".