401341225661 has 32 divisors (see below), whose sum is σ = 445697683200. Its totient is φ = 360022924800.

The previous prime is 401341225639. The next prime is 401341225679. The reversal of 401341225661 is 166522143104.

It is a cyclic number.

It is not a de Polignac number, because 401341225661 - 2²² = 401337031357 is a prime.

It is a super-2 number, since 2×401341225661² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401341225861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14818550 + ... + 14845608.

It is an arithmetic number, because the mean of its divisors is an integer number (13928052600).

Almost surely, 2^401341225661 is an apocalyptic number.

It is an amenable number.

401341225661 is a deficient number, since it is larger than the sum of its proper divisors (44356457539).

401341225661 is a wasteful number, since it uses less digits than its factorization.

401341225661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27749.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 401341225661 its reverse (166522143104), we get a palindrome (567863368765).

The spelling of 401341225661 in words is "four hundred one billion, three hundred forty-one million, two hundred twenty-five thousand, six hundred sixty-one".