63465540161 has 2 divisors, whose sum is σ = 63465540162. Its totient is φ = 63465540160.

The previous prime is 63465540157. The next prime is 63465540167. The reversal of 63465540161 is 16104556436.

63465540161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63011040400 + 454499761 = 251020^2 + 21319^2 .

It is a cyclic number.

It is not a de Polignac number, because 63465540161 - 2² = 63465540157 is a prime.

It is not a weakly prime, because it can be changed into another prime (63465540167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31732770080 + 31732770081.

It is an arithmetic number, because the mean of its divisors is an integer number (31732770081).

Almost surely, 2^63465540161 is an apocalyptic number.

It is an amenable number.

63465540161 is a deficient number, since it is larger than the sum of its proper divisors (1).

63465540161 is an equidigital number, since it uses as much as digits as its factorization.

63465540161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 63465540161 in words is "sixty-three billion, four hundred sixty-five million, five hundred forty thousand, one hundred sixty-one".