401012354161 has 4 divisors (see below), whose sum is σ = 401052222324. Its totient is φ = 400972486000.

The previous prime is 401012354147. The next prime is 401012354167. The reversal of 401012354161 is 161453210104.

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 110889000000 + 290123354161 = 333000^2 + 538631^2 .

It is a cyclic number.

It is not a de Polignac number, because 401012354161 - 2⁵ = 401012354129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401012354167) 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, 19918990 + ... + 19939111.

It is an arithmetic number, because the mean of its divisors is an integer number (100263055581).

Almost surely, 2^401012354161 is an apocalyptic number.

It is an amenable number.

401012354161 is a deficient number, since it is larger than the sum of its proper divisors (39868163).

401012354161 is a wasteful number, since it uses less digits than its factorization.

401012354161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39868162.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 401012354161 its reverse (161453210104), we get a palindrome (562465564265).

The spelling of 401012354161 in words is "four hundred one billion, twelve million, three hundred fifty-four thousand, one hundred sixty-one".