161464513332013 has 4 divisors (see below), whose sum is σ = 161472705777180. Its totient is φ = 161456320886848.

The previous prime is 161464513331911. The next prime is 161464513332041. The reversal of 161464513332013 is 310233315464161.

161464513332013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70126773433929 + 91337739898084 = 8374173^2 + 9557078^2 .

It is a cyclic number.

It is not a de Polignac number, because 161464513332013 - 2¹³ = 161464513323821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161464513932013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4096193020 + ... + 4096232437.

It is an arithmetic number, because the mean of its divisors is an integer number (40368176444295).

Almost surely, 2^{161464513332013} is an apocalyptic number.

It is an amenable number.

161464513332013 is a deficient number, since it is larger than the sum of its proper divisors (8192445167).

161464513332013 is an equidigital number, since it uses as much as digits as its factorization.

161464513332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192445166.

The product of its (nonzero) digits is 466560, while the sum is 43.

Adding to 161464513332013 its reverse (310233315464161), we get a palindrome (471697828796174).

The spelling of 161464513332013 in words is "one hundred sixty-one trillion, four hundred sixty-four billion, five hundred thirteen million, three hundred thirty-two thousand, thirteen".