161250266053 has 4 divisors (see below), whose sum is σ = 161256494700. Its totient is φ = 161244037408.

The previous prime is 161250266027. The next prime is 161250266101. The reversal of 161250266053 is 350662052161.

161250266053 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, and also an emirpimes, since its reverse is a distinct semiprime: 350662052161 = 55057 ⋅6369073.

It can be written as a sum of positive squares in 2 ways, for example, as 23982239044 + 137268027009 = 154862^2 + 370497^2 .

It is a cyclic number.

It is not a de Polignac number, because 161250266053 - 2²¹ = 161248168901 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 (161250266453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075328 + ... + 3127321.

It is an arithmetic number, because the mean of its divisors is an integer number (40314123675).

Almost surely, 2^161250266053 is an apocalyptic number.

It is an amenable number.

161250266053 is a deficient number, since it is larger than the sum of its proper divisors (6228647).

161250266053 is an equidigital number, since it uses as much as digits as its factorization.

161250266053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228646.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 161250266053 in words is "one hundred sixty-one billion, two hundred fifty million, two hundred sixty-six thousand, fifty-three".