1405723196161 has 4 divisors (see below), whose sum is σ = 1420215187972. Its totient is φ = 1391231204352.

The previous prime is 1405723196123. The next prime is 1405723196177. The reversal of 1405723196161 is 1616913275041.

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 270712090000 + 1135011106161 = 520300^2 + 1065369^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405723196161 - 2⁹ = 1405723195649 is a prime.

It is a super-3 number, since 3×1405723196161³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405723191161) 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, 7245995760 + ... + 7245995953.

It is an arithmetic number, because the mean of its divisors is an integer number (355053796993).

Almost surely, 2^{1405723196161} is an apocalyptic number.

It is an amenable number.

1405723196161 is a deficient number, since it is larger than the sum of its proper divisors (14491991811).

1405723196161 is an equidigital number, since it uses as much as digits as its factorization.

1405723196161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14491991810.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 1405723196161 in words is "one trillion, four hundred five billion, seven hundred twenty-three million, one hundred ninety-six thousand, one hundred sixty-one".