20401041401 has 4 divisors (see below), whose sum is σ = 21970352292. Its totient is φ = 18831730512.

The previous prime is 20401041373. The next prime is 20401041443. The reversal of 20401041401 is 10414010402.

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 10068115600 + 10332925801 = 100340^2 + 101651^2 .

It is a cyclic number.

It is not a de Polignac number, because 20401041401 - 2⁶ = 20401041337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401041401.

It is not an unprimeable number, because it can be changed into a prime (20401041461) 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, 784655426 + ... + 784655451.

It is an arithmetic number, because the mean of its divisors is an integer number (5492588073).

Almost surely, 2^20401041401 is an apocalyptic number.

It is an amenable number.

20401041401 is a deficient number, since it is larger than the sum of its proper divisors (1569310891).

20401041401 is a wasteful number, since it uses less digits than its factorization.

20401041401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569310890.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20401041401 its reverse (10414010402), we get a palindrome (30815051803).

The spelling of 20401041401 in words is "twenty billion, four hundred one million, forty-one thousand, four hundred one".